diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 4420cad4..2bad1dde 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -3,6 +3,12 @@
 # Griffin maintainers are responsible for all machinery in this repository.
 * @brave/griffin-maintainers
 
-# The seed file is owned by the uplift team as any change to it directly affects
-# public builds. It's important to update the seed in a controlled manner.
-/seed/seed.json @brave/uplift-approvers
+# The seed directory is deprecated and no longer used for the seed generation.
+# However, it is used by the perf infrastructure to access the Griffin seed at
+# some point in the past. Lock it to Griffin maintainers to prevent any
+# unrelated changes.
+/seed/** @brave/griffin-maintainers
+
+# The studies are owned by the uplift team as any change directly affects public
+# builds. It's important to update studies in a controlled manner.
+/studies/*.json5 @brave/uplift-approvers
diff --git a/.github/workflows/generate-test-seed.yml b/.github/workflows/generate-test-seed.yml
index c8a849ea..a79f8efa 100644
--- a/.github/workflows/generate-test-seed.yml
+++ b/.github/workflows/generate-test-seed.yml
@@ -4,7 +4,6 @@ on:
   pull_request:
     paths:
       - '.github/workflows/generate-test-seed.yml'
-      - 'seed/seed.json'
       - 'studies/**'
 
 jobs:
@@ -23,14 +22,6 @@ jobs:
       - name: Fetch base commit
         run: git fetch --depth=1 origin "$BASE_SHA"
 
-      - name: Setup Python
-        uses: actions/setup-python@f677139bbe7f9c59b41e40162b753c062f5d49a3 # v5
-        with:
-          python-version: '3.11'
-
-      - name: Install python requirements
-        run: pip install -r seed/requirements.txt
-
       - name: Comment "Generation In Progress"
         uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
         with:
@@ -64,10 +55,7 @@ jobs:
 
       - name: Generate seed
         run: |
-          # Use only python implementation for now.
-          python seed/serialize.py seed/seed.json --version "$SEED_VERSION"
-          # TODO: enable this when per-file studies will be synced with seed.json.
-          # npm run seed_tools -- create_seed studies seed.bin --version "$SEED_VERSION"
+          npm run seed_tools create -- --version "$SEED_VERSION"
 
       - name: Upload seed
         env:
diff --git a/.github/workflows/test-src.yml b/.github/workflows/test-src.yml
index 5d0b05fd..d091ba01 100644
--- a/.github/workflows/test-src.yml
+++ b/.github/workflows/test-src.yml
@@ -24,3 +24,14 @@ jobs:
 
       - name: build
         run: npm run build
+
+      - name: Setup Python
+        uses: actions/setup-python@f677139bbe7f9c59b41e40162b753c062f5d49a3 # v5
+        with:
+          python-version: '3.11'
+
+      - name: Install python seed generator requirements
+        run: pip install -r seed/requirements.txt
+
+      - name: Compare python and typescript seed generator
+        run: npm run seed_tools compare_python_gen
diff --git a/README.md b/README.md
index 6a9dea36..b09435f4 100644
--- a/README.md
+++ b/README.md
@@ -9,36 +9,42 @@ See the [Wiki](<https://github.com/brave/brave-browser/wiki/Brave-Variations-(Gr
 A continuous integration server (CI) serializes and signs the updated seed file before publishing it to a CDN endpoint at https://variations.brave.com/seed. To browse the contents of the seed file a dashboard is hosted at https://griffin.brave.com. The repo is organized as follows:
 
 - `/crypto` contains a util to create key pairs and sign the seed file.
-- `/seed` contains the JSON seed definition and serialisation code.
-- `/src` contains the web dashboard to browse the seed contents and tracker code the track changes. See https://github.com/brave/brave-variations/blob/main/src/README.md for details.
+- `/seed` contains a deprecated JSON seed definition and serialisation code.
+- `/src` contains the web dashboard to browse the seed contents, the tracker code to track seed changes and the current seed generator. See [src/README.md](src/README.md) for details.
+- `/studies` contains the studies used to generate the seed.
 
-## Git flow
+## Git flow for `/studies`
 
-1. Work in feature branch and when done create a PR to `main` branch.
-2. Verify that everything works as intended via PR instructions (use `--variations-pr` flag).
+1. Run `npm install` after a checkout.
+2. Create or modify a study in `/studies`, following the protobuf schema in
+   [`src/proto/study.proto`](/src/proto/study.proto).
+3. Run `npm run seed_tools lint -- --fix` until there are no issues.
+4. Create a PR to the `main` branch.
+5. Verify that everything works as intended using the PR instructions.
 
 ## Key Generation and Exchange
 
-On initial deployment and subsequent key rotations a new key pair has to be generated. The public key is exchanged by patching the hard-coded public key bytes in [variations_seed_store.cc#L37](https://source.chromium.org/chromium/chromium/src/+/master:components/variations/variations_seed_store.cc;l=37):
+On initial deployment and subsequent key rotations a new key pair has to be generated. The public key is exchanged by patching the hard-coded public key bytes in [variations_seed_store.cc](https://source.chromium.org/chromium/chromium/src/+/main:components/variations/variations_seed_store.cc;l=54;drc=5e751800f8e981ee6a18db8a8fa00883a851ecf7):
 
 1. Generate a key pair with `$ go run ./crypto/crypto_util.go keygen`.
-2. Update the [patched public key](https://github.com/brave/brave-core/blob/master/chromium_src/components/variations/variations_seed_store.cc#L6) in brave-core.
+2. Update the [patched public key](https://github.com/brave/brave-core/blob/e2ded454bd2153e8e1a46be7ae13bbd540cf0d6d/chromium_src/components/variations/variations_seed_store.cc#L44-L53) in brave-core.
 3. Store the private key in a secure vault and ensure it is accessible by CI.
 
 ## Seed Serialization, Signing and Serving
 
 The following steps are performed by CI to publish the updated seed file:
 
-1. Run `$ python seed/serialize.py seed/seed.json` to compile the protobuf.
+1. Run `$ npm run seed_tools create` to compile the protobuf.
 2. Sign the seed file with `$ go run /crypto/crypto_util.go sign`.
 3. Update the `X-Seed-Signature` response header.
 4. Update the ETAG header with the contents of `serialnumber`.
+5. Gzip the seed and set `Content-Encoding: gzip` response header.
 
 Constraints:
 
-- All studies are [one time randomized](https://source.chromium.org/chromium/chromium/src/+/main:base/metrics/field_trial.h;l=99).
-- Platform and channel filters must be applied. See `PLATFORMS` and `CHANNELS` constants in `serialize.py`.
-- Brave Ads studies must contain the stubstring "BraveAds" in their study name. Only one ads study with page visible side effects is allowed to run. Multiple studies without visible side effects can run simultanesouly.
+- All studies are [one time randomized](https://source.chromium.org/chromium/chromium/src/+/main:base/metrics/field_trial.h;l=43;drc=60a72b0afdb415164c8f72cb0cada4317e4464a1).
+- Platform and channel filters must be applied.
+- Brave Ads studies must contain the substring "BraveAds" in their study name. Only one ads study with page visible side effects is allowed to run. Multiple studies without visible side effects can run simultanesouly.
 
 ## Some Notes on using variations in the Browser
 
diff --git a/src/README.md b/src/README.md
index 59664870..563f86ad 100644
--- a/src/README.md
+++ b/src/README.md
@@ -1,4 +1,4 @@
-# Griffin & Finch Tracker
+# Griffin & Finch Tracker & Seed Tools
 
 ## Directory structure
 
@@ -6,11 +6,13 @@
 
 `finch_tracker` - NodeJS/TS console app to track seed changes. See https://github.com/brave/finch-data-private/#finch-tracker
 
-`web` WebUI hosted on griffin.brave.com. It parses raw seed data and shows them in human readable format. Doesn't use any sophisticated backend, 100% code runs on the client side.
+`proto` chromium protobuf files describing seed data format.
 
-`test` is supporting code/data to use in tests
+`seed_tools` seed generator and related tools to create the seed from `/studies` directory.
 
-`proto` chromium protobuf files describing seed data format.
+`test` is supporting code/data to use in tests.
+
+`web` WebUI hosted on griffin.brave.com. It parses raw seed data and shows them in human readable format. Doesn't use any sophisticated backend, 100% code runs on the client side.
 
 ## Commands and actions
 
diff --git a/src/scripts/lint.ts b/src/scripts/lint.ts
index f920b880..95a33524 100644
--- a/src/scripts/lint.ts
+++ b/src/scripts/lint.ts
@@ -41,8 +41,7 @@ function getLintAllCommands(options: Options): string[] {
   return [
     'prettier . --ignore-unknown' + (options.fix ? ' --write' : ' --check'),
     'eslint . --config src/.eslintrc.js' + (options.fix ? ' --fix' : ''),
-    // TODO(goodov): Enable when per-file structure appears.
-    // 'npm run seed_tools lint --' + (options.fix ? ' --fix' : ''),
+    'npm run seed_tools lint --' + (options.fix ? ' --fix' : ''),
   ];
 }
 
diff --git a/studies/AllowCertainClientHintsStudy.json5 b/studies/AllowCertainClientHintsStudy.json5
new file mode 100644
index 00000000..cd4ca57e
--- /dev/null
+++ b/studies/AllowCertainClientHintsStudy.json5
@@ -0,0 +1,34 @@
+[
+  {
+    name: 'AllowCertainClientHintsStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'AllowCertainClientHints',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '104.1.44.59',
+      channel: [
+        'RELEASE',
+        'BETA',
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveAIChatEnabledStudy.json5 b/studies/BraveAIChatEnabledStudy.json5
new file mode 100644
index 00000000..e3b7e42f
--- /dev/null
+++ b/studies/BraveAIChatEnabledStudy.json5
@@ -0,0 +1,31 @@
+[
+  {
+    name: 'BraveAIChatEnabledStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'AIChat',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '119.1.60.0',
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveAdblockExperimentalListDefaultStudy.json5 b/studies/BraveAdblockExperimentalListDefaultStudy.json5
new file mode 100644
index 00000000..a94a9f9c
--- /dev/null
+++ b/studies/BraveAdblockExperimentalListDefaultStudy.json5
@@ -0,0 +1,33 @@
+[
+  {
+    name: 'BraveAdblockExperimentalListDefaultStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveAdblockExperimentalListDefault',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '123.1.66.53',
+      channel: [
+        'BETA',
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveAdblockMobileNotificationsListDefault.json5 b/studies/BraveAdblockMobileNotificationsListDefault.json5
new file mode 100644
index 00000000..ca42919e
--- /dev/null
+++ b/studies/BraveAdblockMobileNotificationsListDefault.json5
@@ -0,0 +1,33 @@
+[
+  {
+    name: 'BraveAdblockMobileNotificationsListDefault',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveAdblockMobileNotificationsListDefault',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'RELEASE',
+        'BETA',
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveAds.CreativeAdModelBasedPredictorRecencyStudy.json5 b/studies/BraveAds.CreativeAdModelBasedPredictorRecencyStudy.json5
new file mode 100644
index 00000000..3f61f55a
--- /dev/null
+++ b/studies/BraveAds.CreativeAdModelBasedPredictorRecencyStudy.json5
@@ -0,0 +1,43 @@
+[
+  {
+    name: 'BraveAds.CreativeAdModelBasedPredictorRecencyStudy',
+    experiment: [
+      {
+        name: 'NoRecency',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'CreativeNotificationAdModelBasedPredictor',
+            'CreativeNewTabPageAdModelBasedPredictor',
+            'CreativeInlineContentAdModelBasedPredictor',
+          ],
+        },
+        param: [
+          {
+            name: 'last_seen_ad_predictor_weight',
+            value: '0.0',
+          },
+          {
+            name: 'last_seen_advertiser_predictor_weight',
+            value: '0.0',
+          },
+        ],
+      },
+    ],
+    filter: {
+      max_version: '128.1.69.51',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+        'IOS',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveAdsAdEventStudy.json5 b/studies/BraveAdsAdEventStudy.json5
new file mode 100644
index 00000000..91e915b0
--- /dev/null
+++ b/studies/BraveAdsAdEventStudy.json5
@@ -0,0 +1,44 @@
+[
+  {
+    name: 'BraveAdsAdEventStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'AdEvent',
+          ],
+        },
+        param: [
+          {
+            name: 'debounce_clicked_ad_event_for',
+            value: '1s',
+          },
+          {
+            name: 'deduplicate_clicked_ad_event_for',
+            value: '1s',
+          },
+        ],
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+        'IOS',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveAdsConversionsStudy.json5 b/studies/BraveAdsConversionsStudy.json5
new file mode 100644
index 00000000..746f82e3
--- /dev/null
+++ b/studies/BraveAdsConversionsStudy.json5
@@ -0,0 +1,40 @@
+[
+  {
+    name: 'BraveAdsConversionsStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'Conversions',
+          ],
+        },
+        param: [
+          {
+            name: 'creative_set_conversion_cap',
+            value: '0',
+          },
+        ],
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+        'IOS',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveAdsExclusionRulesStudy.json5 b/studies/BraveAdsExclusionRulesStudy.json5
new file mode 100644
index 00000000..aade3ee6
--- /dev/null
+++ b/studies/BraveAdsExclusionRulesStudy.json5
@@ -0,0 +1,40 @@
+[
+  {
+    name: 'BraveAdsExclusionRulesStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'ExclusionRules',
+          ],
+        },
+        param: [
+          {
+            name: 'should_exclude_ad_if_creative_set_exceeds_conversion_cap',
+            value: '0',
+          },
+        ],
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+        'IOS',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveAdsNewTabPageAdsStudy.json5 b/studies/BraveAdsNewTabPageAdsStudy.json5
new file mode 100644
index 00000000..8916704d
--- /dev/null
+++ b/studies/BraveAdsNewTabPageAdsStudy.json5
@@ -0,0 +1,40 @@
+[
+  {
+    name: 'BraveAdsNewTabPageAdsStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'NewTabPageAds',
+          ],
+        },
+        param: [
+          {
+            name: 'minimum_wait_time',
+            value: '1m',
+          },
+        ],
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+        'IOS',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveAdsSiteVisitStudy.json5 b/studies/BraveAdsSiteVisitStudy.json5
new file mode 100644
index 00000000..14703b48
--- /dev/null
+++ b/studies/BraveAdsSiteVisitStudy.json5
@@ -0,0 +1,44 @@
+[
+  {
+    name: 'BraveAdsSiteVisitStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'SiteVisitFeature',
+          ],
+        },
+        param: [
+          {
+            name: 'page_land_after',
+            value: '5s',
+          },
+          {
+            name: 'page_land_cap',
+            value: '0',
+          },
+        ],
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+        'IOS',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveAdsTextClassificationPageProbabilitiesStudy.json5 b/studies/BraveAdsTextClassificationPageProbabilitiesStudy.json5
new file mode 100644
index 00000000..fb8b2f7b
--- /dev/null
+++ b/studies/BraveAdsTextClassificationPageProbabilitiesStudy.json5
@@ -0,0 +1,40 @@
+[
+  {
+    name: 'BraveAdsTextClassificationPageProbabilitiesStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'TextClassification',
+          ],
+        },
+        param: [
+          {
+            name: 'page_probabilities_history_size',
+            value: '15',
+          },
+        ],
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+        'IOS',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveAggressiveModeRetirementExperiment.json5 b/studies/BraveAggressiveModeRetirementExperiment.json5
new file mode 100644
index 00000000..8bd3370d
--- /dev/null
+++ b/studies/BraveAggressiveModeRetirementExperiment.json5
@@ -0,0 +1,34 @@
+[
+  {
+    name: 'BraveAggressiveModeRetirementExperiment',
+    experiment: [
+      {
+        name: 'Disabled',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'BraveShowStrictFingerprintingMode',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '120.1.63.110',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveAutoTranslateStudy.json5 b/studies/BraveAutoTranslateStudy.json5
new file mode 100644
index 00000000..45b0b2be
--- /dev/null
+++ b/studies/BraveAutoTranslateStudy.json5
@@ -0,0 +1,34 @@
+[
+  {
+    name: 'BraveAutoTranslateStudy',
+    experiment: [
+      {
+        name: 'AutoTranslateDisabled',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'BraveEnableAutoTranslate',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '107.1.47.31',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveCleanupSessionCookiesOnSessionRestore.json5 b/studies/BraveCleanupSessionCookiesOnSessionRestore.json5
new file mode 100644
index 00000000..91263bdf
--- /dev/null
+++ b/studies/BraveCleanupSessionCookiesOnSessionRestore.json5
@@ -0,0 +1,27 @@
+[
+  {
+    name: 'BraveCleanupSessionCookiesOnSessionRestore',
+    experiment: [
+      {
+        name: 'Disabled',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'BraveCleanupSessionCookiesOnSessionRestore',
+          ],
+        },
+      },
+    ],
+    filter: {
+      min_version: '111.1.50.0',
+      channel: [
+        'RELEASE',
+        'BETA',
+        'NIGHTLY',
+      ],
+      platform: [
+        'MAC',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveDebounceStudy.json5 b/studies/BraveDebounceStudy.json5
new file mode 100644
index 00000000..8fdbe144
--- /dev/null
+++ b/studies/BraveDebounceStudy.json5
@@ -0,0 +1,43 @@
+[
+  {
+    name: 'BraveDebounceStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveDebounce',
+          ],
+        },
+      },
+      {
+        name: 'Disabled',
+        probability_weight: 0,
+        feature_association: {
+          disable_feature: [
+            'BraveDebounce',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '94.1.32.25',
+      channel: [
+        'RELEASE',
+        'BETA',
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveFallbackDoHStudy.json5 b/studies/BraveFallbackDoHStudy.json5
new file mode 100644
index 00000000..30c254cd
--- /dev/null
+++ b/studies/BraveFallbackDoHStudy.json5
@@ -0,0 +1,37 @@
+[
+  {
+    name: 'BraveFallbackDoHStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 50,
+        feature_association: {
+          enable_feature: [
+            'BraveFallbackDoHProvider',
+          ],
+        },
+        param: [
+          {
+            name: 'BraveFallbackDoHProviderEndpoint',
+            value: 'quad9',
+          },
+        ],
+      },
+      {
+        name: 'Default',
+        probability_weight: 50,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveFeedUpdateStudy.json5 b/studies/BraveFeedUpdateStudy.json5
new file mode 100644
index 00000000..cb369fde
--- /dev/null
+++ b/studies/BraveFeedUpdateStudy.json5
@@ -0,0 +1,30 @@
+[
+  {
+    name: 'BraveFeedUpdateStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveNewsFeedUpdate',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveForgetFirstPartyStorage.json5 b/studies/BraveForgetFirstPartyStorage.json5
new file mode 100644
index 00000000..940273e6
--- /dev/null
+++ b/studies/BraveForgetFirstPartyStorage.json5
@@ -0,0 +1,119 @@
+[
+  {
+    name: 'BraveForgetFirstPartyStorage',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveForgetFirstPartyStorage',
+          ],
+        },
+      },
+      {
+        name: 'Disabled',
+        probability_weight: 0,
+        feature_association: {
+          disable_feature: [
+            'BraveForgetFirstPartyStorage',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '114.1.53.83',
+      channel: [
+        'BETA',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+  {
+    name: 'BraveForgetFirstPartyStorage',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveForgetFirstPartyStorage',
+          ],
+        },
+      },
+      {
+        name: 'Disabled',
+        probability_weight: 0,
+        feature_association: {
+          disable_feature: [
+            'BraveForgetFirstPartyStorage',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '116.1.57.0',
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+  {
+    name: 'BraveForgetFirstPartyStorage',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveForgetFirstPartyStorage',
+          ],
+        },
+      },
+      {
+        name: 'Disabled',
+        probability_weight: 0,
+        feature_association: {
+          disable_feature: [
+            'BraveForgetFirstPartyStorage',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '112.1.51.57',
+      channel: [
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveGoogleSignInPermissionStudy.json5 b/studies/BraveGoogleSignInPermissionStudy.json5
new file mode 100644
index 00000000..7dff42b5
--- /dev/null
+++ b/studies/BraveGoogleSignInPermissionStudy.json5
@@ -0,0 +1,81 @@
+[
+  {
+    name: 'BraveGoogleSignInPermissionStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveGoogleSignInPermission',
+          ],
+        },
+      },
+      {
+        name: 'Disabled',
+        probability_weight: 0,
+        feature_association: {
+          disable_feature: [
+            'BraveGoogleSignInPermission',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '111.1.51.5',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+  {
+    name: 'BraveGoogleSignInPermissionStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveGoogleSignInPermission',
+          ],
+        },
+      },
+      {
+        name: 'Disabled',
+        probability_weight: 0,
+        feature_association: {
+          disable_feature: [
+            'BraveGoogleSignInPermission',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '111.1.51.5',
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveHorizontalTabsUpdateEnabledStudy.json5 b/studies/BraveHorizontalTabsUpdateEnabledStudy.json5
new file mode 100644
index 00000000..024c37fb
--- /dev/null
+++ b/studies/BraveHorizontalTabsUpdateEnabledStudy.json5
@@ -0,0 +1,55 @@
+[
+  {
+    name: 'BraveHorizontalTabsUpdateEnabledStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveHorizontalTabsUpdate',
+          ],
+        },
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+  {
+    name: 'BraveHorizontalTabsUpdateEnabledStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveHorizontalTabsUpdate',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveLocalhostAccessPermissionStudy.json5 b/studies/BraveLocalhostAccessPermissionStudy.json5
new file mode 100644
index 00000000..5b0f2733
--- /dev/null
+++ b/studies/BraveLocalhostAccessPermissionStudy.json5
@@ -0,0 +1,32 @@
+[
+  {
+    name: 'BraveLocalhostAccessPermissionStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveLocalhostAccessPermission',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '115.1.55.5',
+      channel: [
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveP3AConstellationEnabled.json5 b/studies/BraveP3AConstellationEnabled.json5
new file mode 100644
index 00000000..d657749d
--- /dev/null
+++ b/studies/BraveP3AConstellationEnabled.json5
@@ -0,0 +1,33 @@
+[
+  {
+    name: 'BraveP3AConstellationEnabled',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveP3AConstellation',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveP3AJSONOtherDeprecation.json5 b/studies/BraveP3AJSONOtherDeprecation.json5
new file mode 100644
index 00000000..37928e4e
--- /dev/null
+++ b/studies/BraveP3AJSONOtherDeprecation.json5
@@ -0,0 +1,32 @@
+[
+  {
+    name: 'BraveP3AJSONOtherDeprecation',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveP3AOtherJSONDeprecation',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveP3ANebulaNightlyBeta.json5 b/studies/BraveP3ANebulaNightlyBeta.json5
new file mode 100644
index 00000000..519f989f
--- /dev/null
+++ b/studies/BraveP3ANebulaNightlyBeta.json5
@@ -0,0 +1,33 @@
+[
+  {
+    name: 'BraveP3ANebulaNightlyBeta',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveP3ADifferentialSampling',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+        'IOS',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveP3ANebulaRelease.json5 b/studies/BraveP3ANebulaRelease.json5
new file mode 100644
index 00000000..1006d251
--- /dev/null
+++ b/studies/BraveP3ANebulaRelease.json5
@@ -0,0 +1,32 @@
+[
+  {
+    name: 'BraveP3ANebulaRelease',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveP3ADifferentialSampling',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+        'IOS',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveP3ATypicalJSONDeprecationEnabled.json5 b/studies/BraveP3ATypicalJSONDeprecationEnabled.json5
new file mode 100644
index 00000000..97378561
--- /dev/null
+++ b/studies/BraveP3ATypicalJSONDeprecationEnabled.json5
@@ -0,0 +1,33 @@
+[
+  {
+    name: 'BraveP3ATypicalJSONDeprecationEnabled',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveP3ATypicalJSONDeprecation',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveRequestOTRTabRolloutStudy.json5 b/studies/BraveRequestOTRTabRolloutStudy.json5
new file mode 100644
index 00000000..9028d71e
--- /dev/null
+++ b/studies/BraveRequestOTRTabRolloutStudy.json5
@@ -0,0 +1,31 @@
+[
+  {
+    name: 'BraveRequestOTRTabRolloutStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveRequestOTRTab',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveRewardsAllowSelfCustodyProvidersStudy.json5 b/studies/BraveRewardsAllowSelfCustodyProvidersStudy.json5
new file mode 100644
index 00000000..a84f71c2
--- /dev/null
+++ b/studies/BraveRewardsAllowSelfCustodyProvidersStudy.json5
@@ -0,0 +1,29 @@
+[
+  {
+    name: 'BraveRewardsAllowSelfCustodyProvidersStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveRewardsAllowSelfCustodyProviders',
+          ],
+        },
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveRewardsWebUiPanelStudy.json5 b/studies/BraveRewardsWebUiPanelStudy.json5
new file mode 100644
index 00000000..2814a368
--- /dev/null
+++ b/studies/BraveRewardsWebUiPanelStudy.json5
@@ -0,0 +1,33 @@
+[
+  {
+    name: 'BraveRewardsWebUiPanelStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveRewardsWebUIPanel',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '103.1.43.9',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveRoundTimeStampsStudy.json5 b/studies/BraveRoundTimeStampsStudy.json5
new file mode 100644
index 00000000..a4d1682b
--- /dev/null
+++ b/studies/BraveRoundTimeStampsStudy.json5
@@ -0,0 +1,35 @@
+[
+  {
+    name: 'BraveRoundTimeStampsStudy',
+    experiment: [
+      {
+        name: 'Disabled',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'BraveRoundTimeStamps',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '125.*',
+      max_version: '130.1.72.75',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveScreenFingerprintingBlockerStudy.json5 b/studies/BraveScreenFingerprintingBlockerStudy.json5
new file mode 100644
index 00000000..d18d8b22
--- /dev/null
+++ b/studies/BraveScreenFingerprintingBlockerStudy.json5
@@ -0,0 +1,89 @@
+[
+  {
+    name: 'BraveScreenFingerprintingBlockerStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveBlockScreenFingerprinting',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '108.1.48.19',
+      channel: [
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+  {
+    name: 'BraveScreenFingerprintingBlockerStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveBlockScreenFingerprinting',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '111.1.50.93',
+      channel: [
+        'BETA',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+  {
+    name: 'BraveScreenFingerprintingBlockerStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveBlockScreenFingerprinting',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '111.1.50.93',
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveSearchAdStudy.json5 b/studies/BraveSearchAdStudy.json5
new file mode 100644
index 00000000..9f73f9fa
--- /dev/null
+++ b/studies/BraveSearchAdStudy.json5
@@ -0,0 +1,67 @@
+[
+  {
+    name: 'BraveSearchAdStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'ShouldLaunchBraveAdsAsInProcessService',
+            'ShouldAlwaysRunBraveAdsService',
+            'ShouldSupportSearchResultAds',
+            'ShouldAlwaysTriggerBraveSearchResultAdEvents',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+  {
+    name: 'BraveSearchAdStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'ShouldAlwaysRunBraveAdsService',
+            'ShouldSupportSearchResultAds',
+            'ShouldAlwaysTriggerBraveSearchResultAdEvents',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '122.1.65.32',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'IOS',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveSearchPromotionBannerStudy.json5 b/studies/BraveSearchPromotionBannerStudy.json5
new file mode 100644
index 00000000..f122b702
--- /dev/null
+++ b/studies/BraveSearchPromotionBannerStudy.json5
@@ -0,0 +1,77 @@
+[
+  {
+    name: 'BraveSearchPromotionBannerStudy',
+    experiment: [
+      {
+        name: 'banner_type_B',
+        probability_weight: 33,
+        feature_association: {
+          enable_feature: [
+            'BraveSearchOmniboxBanner',
+          ],
+        },
+        param: [
+          {
+            name: 'banner_type',
+            value: 'type_B',
+          },
+        ],
+      },
+      {
+        name: 'banner_type_C',
+        probability_weight: 33,
+        feature_association: {
+          enable_feature: [
+            'BraveSearchOmniboxBanner',
+          ],
+        },
+        param: [
+          {
+            name: 'banner_type',
+            value: 'type_C',
+          },
+        ],
+      },
+      {
+        name: 'banner_type_D',
+        probability_weight: 34,
+        feature_association: {
+          enable_feature: [
+            'BraveSearchOmniboxBanner',
+          ],
+        },
+        param: [
+          {
+            name: 'banner_type',
+            value: 'type_D',
+          },
+        ],
+      },
+    ],
+    filter: {
+      min_version: '117.1.60.41',
+      channel: [
+        'BETA',
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+      country: [
+        'CA',
+        'DE',
+        'FR',
+        'GB',
+        'US',
+        'AT',
+        'ES',
+        'MX',
+        'BR',
+        'AR',
+        'IN',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveSearchPromotionBannerStudyOnStable.json5 b/studies/BraveSearchPromotionBannerStudyOnStable.json5
new file mode 100644
index 00000000..eb2e15c2
--- /dev/null
+++ b/studies/BraveSearchPromotionBannerStudyOnStable.json5
@@ -0,0 +1,79 @@
+[
+  {
+    name: 'BraveSearchPromotionBannerStudyOnStable',
+    experiment: [
+      {
+        name: 'banner_type_B',
+        probability_weight: 2,
+        feature_association: {
+          enable_feature: [
+            'BraveSearchOmniboxBanner',
+          ],
+        },
+        param: [
+          {
+            name: 'banner_type',
+            value: 'type_B',
+          },
+        ],
+      },
+      {
+        name: 'banner_type_C',
+        probability_weight: 2,
+        feature_association: {
+          enable_feature: [
+            'BraveSearchOmniboxBanner',
+          ],
+        },
+        param: [
+          {
+            name: 'banner_type',
+            value: 'type_C',
+          },
+        ],
+      },
+      {
+        name: 'banner_type_D',
+        probability_weight: 2,
+        feature_association: {
+          enable_feature: [
+            'BraveSearchOmniboxBanner',
+          ],
+        },
+        param: [
+          {
+            name: 'banner_type',
+            value: 'type_D',
+          },
+        ],
+      },
+      {
+        name: 'Default',
+        probability_weight: 94,
+      },
+    ],
+    filter: {
+      min_version: '117.1.60.41',
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+      country: [
+        'CA',
+        'DE',
+        'FR',
+        'GB',
+        'AT',
+        'ES',
+        'MX',
+        'BR',
+        'AR',
+        'IN',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveTranslateStudy.json5 b/studies/BraveTranslateStudy.json5
new file mode 100644
index 00000000..2a5b6838
--- /dev/null
+++ b/studies/BraveTranslateStudy.json5
@@ -0,0 +1,36 @@
+[
+  {
+    name: 'BraveTranslateStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'UseBraveTranslateGo',
+            'Translate',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '104.1.43.54',
+      max_version: '106.1.45.44',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveWalletAnkrBalancesEnabled.json5 b/studies/BraveWalletAnkrBalancesEnabled.json5
new file mode 100644
index 00000000..da670a65
--- /dev/null
+++ b/studies/BraveWalletAnkrBalancesEnabled.json5
@@ -0,0 +1,33 @@
+[
+  {
+    name: 'BraveWalletAnkrBalancesEnabled',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 0,
+        feature_association: {
+          enable_feature: [
+            'BraveWalletAnkrBalances',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 100,
+      },
+    ],
+    filter: {
+      min_version: '120.*',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveWebViewRoundedCornersStudy.json5 b/studies/BraveWebViewRoundedCornersStudy.json5
new file mode 100644
index 00000000..240ca6c3
--- /dev/null
+++ b/studies/BraveWebViewRoundedCornersStudy.json5
@@ -0,0 +1,27 @@
+[
+  {
+    name: 'BraveWebViewRoundedCornersStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'brave-web-view-rounded-corners',
+          ],
+        },
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveWebcompatExceptionsServiceReleaseStudy.json5 b/studies/BraveWebcompatExceptionsServiceReleaseStudy.json5
new file mode 100644
index 00000000..cf41a243
--- /dev/null
+++ b/studies/BraveWebcompatExceptionsServiceReleaseStudy.json5
@@ -0,0 +1,32 @@
+[
+  {
+    name: 'BraveWebcompatExceptionsServiceReleaseStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveWebcompatExceptionsService',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '128.1.69.150',
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/BraveWebcompatExceptionsServiceStudy.json5 b/studies/BraveWebcompatExceptionsServiceStudy.json5
new file mode 100644
index 00000000..0b3fd820
--- /dev/null
+++ b/studies/BraveWebcompatExceptionsServiceStudy.json5
@@ -0,0 +1,33 @@
+[
+  {
+    name: 'BraveWebcompatExceptionsServiceStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveWebcompatExceptionsService',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '128.1.70.66',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/CanvasKillSwitches.json5 b/studies/CanvasKillSwitches.json5
new file mode 100644
index 00000000..2ff68695
--- /dev/null
+++ b/studies/CanvasKillSwitches.json5
@@ -0,0 +1,31 @@
+[
+  {
+    name: 'CanvasKillSwitches',
+    experiment: [
+      {
+        name: 'Disabled_EmergencyKillSwitch',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'Canvas2DHibernation',
+            'EvictionUnlocksResources',
+          ],
+        },
+      },
+    ],
+    filter: {
+      max_version: '125.*',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/ClampPlatformVersionClientHint.json5 b/studies/ClampPlatformVersionClientHint.json5
new file mode 100644
index 00000000..76783d22
--- /dev/null
+++ b/studies/ClampPlatformVersionClientHint.json5
@@ -0,0 +1,30 @@
+[
+  {
+    name: 'ClampPlatformVersionClientHint',
+    experiment: [
+      {
+        name: 'Disabled',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'ClampPlatformVersionClientHint',
+          ],
+        },
+      },
+    ],
+    filter: {
+      min_version: '114.1.52.78',
+      channel: [
+        'RELEASE',
+        'BETA',
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/CloseWatcher.json5 b/studies/CloseWatcher.json5
new file mode 100644
index 00000000..e2ad2112
--- /dev/null
+++ b/studies/CloseWatcher.json5
@@ -0,0 +1,31 @@
+[
+  {
+    name: 'CloseWatcher',
+    experiment: [
+      {
+        name: 'Disabled_EmergencyKillSwitch',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'CloseWatcher',
+          ],
+        },
+      },
+    ],
+    filter: {
+      min_version: '120.*',
+      max_version: '122.*',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/CollectWebGPUSupportMetricsKillSwitch.json5 b/studies/CollectWebGPUSupportMetricsKillSwitch.json5
new file mode 100644
index 00000000..c2c7d35f
--- /dev/null
+++ b/studies/CollectWebGPUSupportMetricsKillSwitch.json5
@@ -0,0 +1,28 @@
+[
+  {
+    name: 'CollectWebGPUSupportMetricsKillSwitch',
+    experiment: [
+      {
+        name: 'Disabled_CollectWebGPUSupportMetrics',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'CollectWebGPUSupportMetrics',
+          ],
+        },
+      },
+    ],
+    filter: {
+      min_version: '119.*',
+      max_version: '119.*',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/CookieListDefaultStudy.json5 b/studies/CookieListDefaultStudy.json5
new file mode 100644
index 00000000..ebf0acaf
--- /dev/null
+++ b/studies/CookieListDefaultStudy.json5
@@ -0,0 +1,33 @@
+[
+  {
+    name: 'CookieListDefaultStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveAdblockCookieListDefault',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'RELEASE',
+        'BETA',
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/CosmeticFilteringChildFramesStudy.json5 b/studies/CosmeticFilteringChildFramesStudy.json5
new file mode 100644
index 00000000..5c36a183
--- /dev/null
+++ b/studies/CosmeticFilteringChildFramesStudy.json5
@@ -0,0 +1,33 @@
+[
+  {
+    name: 'CosmeticFilteringChildFramesStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveAdblockCosmeticFilteringChildFrames',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '106.1.46.14',
+      channel: [
+        'BETA',
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/CrossPlatformVPNStudy.json5 b/studies/CrossPlatformVPNStudy.json5
new file mode 100644
index 00000000..789665c8
--- /dev/null
+++ b/studies/CrossPlatformVPNStudy.json5
@@ -0,0 +1,34 @@
+[
+  {
+    name: 'CrossPlatformVPNStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveVPN',
+            'BraveVPNLinkSubscriptionAndroidUI',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '110.1.49.120',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/Default1pBlockingStudy.json5 b/studies/Default1pBlockingStudy.json5
new file mode 100644
index 00000000..e7523d27
--- /dev/null
+++ b/studies/Default1pBlockingStudy.json5
@@ -0,0 +1,81 @@
+[
+  {
+    name: 'Default1pBlockingStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 0,
+        feature_association: {
+          enable_feature: [
+            'BraveAdblockDefault1pBlocking',
+          ],
+        },
+      },
+      {
+        name: 'Disabled',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'BraveAdblockDefault1pBlocking',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '92.1.30.57',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+  {
+    name: 'Default1pBlockingStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 0,
+        feature_association: {
+          enable_feature: [
+            'BraveAdblockDefault1pBlocking',
+          ],
+        },
+      },
+      {
+        name: 'Disabled',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'BraveAdblockDefault1pBlocking',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '92.1.30.57',
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/DefaultBraveCommandsStudy.json5 b/studies/DefaultBraveCommandsStudy.json5
new file mode 100644
index 00000000..627d0b2e
--- /dev/null
+++ b/studies/DefaultBraveCommandsStudy.json5
@@ -0,0 +1,31 @@
+[
+  {
+    name: 'DefaultBraveCommandsStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveCommands',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/DefaultBraveOmniboxMoreHistoryStudy.json5 b/studies/DefaultBraveOmniboxMoreHistoryStudy.json5
new file mode 100644
index 00000000..763172d2
--- /dev/null
+++ b/studies/DefaultBraveOmniboxMoreHistoryStudy.json5
@@ -0,0 +1,30 @@
+[
+  {
+    name: 'DefaultBraveOmniboxMoreHistoryStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'HistoryMoreSearchResults',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/DefaultPassthroughCommandDecoderStudy.json5 b/studies/DefaultPassthroughCommandDecoderStudy.json5
new file mode 100644
index 00000000..9eae9995
--- /dev/null
+++ b/studies/DefaultPassthroughCommandDecoderStudy.json5
@@ -0,0 +1,31 @@
+[
+  {
+    name: 'DefaultPassthroughCommandDecoderStudy',
+    experiment: [
+      {
+        name: 'Disabled',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'DefaultPassthroughCommandDecoder',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '125.*',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/DefaultPlaylistStudy.json5 b/studies/DefaultPlaylistStudy.json5
new file mode 100644
index 00000000..8ec1071f
--- /dev/null
+++ b/studies/DefaultPlaylistStudy.json5
@@ -0,0 +1,30 @@
+[
+  {
+    name: 'DefaultPlaylistStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'Playlist',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/DisableCnameUncloakingForAndroid.json5 b/studies/DisableCnameUncloakingForAndroid.json5
new file mode 100644
index 00000000..14cef9e0
--- /dev/null
+++ b/studies/DisableCnameUncloakingForAndroid.json5
@@ -0,0 +1,30 @@
+[
+  {
+    name: 'DisableCnameUncloakingForAndroid',
+    experiment: [
+      {
+        name: 'Disabled',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'BraveAdblockCnameUncloaking',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/DisableReduceLanguage.json5 b/studies/DisableReduceLanguage.json5
new file mode 100644
index 00000000..1189650b
--- /dev/null
+++ b/studies/DisableReduceLanguage.json5
@@ -0,0 +1,38 @@
+[
+  {
+    name: 'DisableReduceLanguage',
+    experiment: [
+      {
+        name: 'Default',
+        probability_weight: 0,
+        feature_association: {
+          disable_feature: [
+            'BraveReduceLanguage',
+          ],
+        },
+      },
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveReduceLanguage',
+          ],
+        },
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/EphemeralStorageStudy.json5 b/studies/EphemeralStorageStudy.json5
new file mode 100644
index 00000000..2b1e6650
--- /dev/null
+++ b/studies/EphemeralStorageStudy.json5
@@ -0,0 +1,81 @@
+[
+  {
+    name: 'EphemeralStorageStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'EphemeralStorage',
+          ],
+        },
+      },
+      {
+        name: 'Disabled',
+        probability_weight: 0,
+        feature_association: {
+          disable_feature: [
+            'EphemeralStorage',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '89.1.21.73',
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+  {
+    name: 'EphemeralStorageStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'EphemeralStorage',
+          ],
+        },
+      },
+      {
+        name: 'Disabled',
+        probability_weight: 0,
+        feature_association: {
+          disable_feature: [
+            'EphemeralStorage',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '89.1.21.73',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/ExtensionsManifestV2Study.json5 b/studies/ExtensionsManifestV2Study.json5
new file mode 100644
index 00000000..4ca4b5be
--- /dev/null
+++ b/studies/ExtensionsManifestV2Study.json5
@@ -0,0 +1,32 @@
+[
+  {
+    name: 'ExtensionsManifestV2Study',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'ExtensionsManifestV2',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '125.1.68.25',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/ExtensionsManifestV2StudyRelease.json5 b/studies/ExtensionsManifestV2StudyRelease.json5
new file mode 100644
index 00000000..0dc3738b
--- /dev/null
+++ b/studies/ExtensionsManifestV2StudyRelease.json5
@@ -0,0 +1,31 @@
+[
+  {
+    name: 'ExtensionsManifestV2StudyRelease',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'ExtensionsManifestV2',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '125.1.68.25',
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/HangWatcher.json5 b/studies/HangWatcher.json5
new file mode 100644
index 00000000..cf8d018e
--- /dev/null
+++ b/studies/HangWatcher.json5
@@ -0,0 +1,57 @@
+[
+  {
+    name: 'HangWatcher',
+    experiment: [
+      {
+        name: 'HangWatcherEnableDumps',
+        probability_weight: 50,
+        feature_association: {
+          enable_feature: [
+            'EnableHangWatcher',
+          ],
+        },
+        param: [
+          {
+            name: 'ui_thread_log_level',
+            value: '2',
+          },
+          {
+            name: 'io_thread_log_level',
+            value: '2',
+          },
+          {
+            name: 'renderer_process_main_thread_log_level',
+            value: '2',
+          },
+          {
+            name: 'renderer_process_io_thread_log_level',
+            value: '2',
+          },
+          {
+            name: 'utility_process_main_thread_log_level',
+            value: '2',
+          },
+          {
+            name: 'utility_process_io_thread_log_level',
+            value: '2',
+          },
+        ],
+      },
+      {
+        name: 'Default',
+        probability_weight: 50,
+      },
+    ],
+    filter: {
+      min_version: '97.1.36.14',
+      channel: [
+        'NIGHTLY',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/HeapProfilingMacKillSwitch.json5 b/studies/HeapProfilingMacKillSwitch.json5
new file mode 100644
index 00000000..a9754972
--- /dev/null
+++ b/studies/HeapProfilingMacKillSwitch.json5
@@ -0,0 +1,28 @@
+[
+  {
+    name: 'HeapProfilingMacKillSwitch',
+    experiment: [
+      {
+        name: 'Disabled_EmergencyKillSwitch',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'HeapProfilerReporting',
+          ],
+        },
+      },
+    ],
+    filter: {
+      min_version: '122.*',
+      max_version: '125.*',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'MAC',
+      ],
+    },
+  },
+]
diff --git a/studies/InnerHTMLParserFastpathStudy.json5 b/studies/InnerHTMLParserFastpathStudy.json5
new file mode 100644
index 00000000..6ee1a353
--- /dev/null
+++ b/studies/InnerHTMLParserFastpathStudy.json5
@@ -0,0 +1,34 @@
+[
+  {
+    name: 'InnerHTMLParserFastpathStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'InnerHTMLParserFastpath',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      max_version: '114.1.52.999',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/MacCoreLocationBackendStudy.json5 b/studies/MacCoreLocationBackendStudy.json5
new file mode 100644
index 00000000..f2f18edc
--- /dev/null
+++ b/studies/MacCoreLocationBackendStudy.json5
@@ -0,0 +1,40 @@
+[
+  {
+    name: 'MacCoreLocationBackendStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'MacCoreLocationBackend',
+          ],
+        },
+      },
+      {
+        name: 'Disabled',
+        probability_weight: 0,
+        feature_association: {
+          disable_feature: [
+            'MacCoreLocationBackend',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '91.1.26.74',
+      channel: [
+        'RELEASE',
+        'BETA',
+        'NIGHTLY',
+      ],
+      platform: [
+        'MAC',
+      ],
+    },
+  },
+]
diff --git a/studies/MetricsAndCrashSampling.json5 b/studies/MetricsAndCrashSampling.json5
new file mode 100644
index 00000000..69284658
--- /dev/null
+++ b/studies/MetricsAndCrashSampling.json5
@@ -0,0 +1,30 @@
+[
+  {
+    name: 'MetricsAndCrashSampling',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'MetricsReporting',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/ModuleFileNamePatchStudy.json5 b/studies/ModuleFileNamePatchStudy.json5
new file mode 100644
index 00000000..24b1bed8
--- /dev/null
+++ b/studies/ModuleFileNamePatchStudy.json5
@@ -0,0 +1,30 @@
+[
+  {
+    name: 'ModuleFileNamePatchStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'ModuleFileNamePatch',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '112.1.51.89',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+      ],
+      platform: [
+        'WINDOWS',
+      ],
+    },
+  },
+]
diff --git a/studies/ModuleFileNamePatchStudyRelease.json5 b/studies/ModuleFileNamePatchStudyRelease.json5
new file mode 100644
index 00000000..941e0240
--- /dev/null
+++ b/studies/ModuleFileNamePatchStudyRelease.json5
@@ -0,0 +1,29 @@
+[
+  {
+    name: 'ModuleFileNamePatchStudyRelease',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 15,
+        feature_association: {
+          enable_feature: [
+            'ModuleFileNamePatch',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 85,
+      },
+    ],
+    filter: {
+      min_version: '112.1.51.89',
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+      ],
+    },
+  },
+]
diff --git a/studies/NavigationThreadingOptimizationsCompatOldVersions.json5 b/studies/NavigationThreadingOptimizationsCompatOldVersions.json5
new file mode 100644
index 00000000..fed3af11
--- /dev/null
+++ b/studies/NavigationThreadingOptimizationsCompatOldVersions.json5
@@ -0,0 +1,31 @@
+[
+  {
+    name: 'NavigationThreadingOptimizationsCompatOldVersions',
+    experiment: [
+      {
+        name: 'Disabled',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'NavigationThreadingOptimizations',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      max_version: '102.1.39.0',
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/NewiOSPlaylistUIStudy.json5 b/studies/NewiOSPlaylistUIStudy.json5
new file mode 100644
index 00000000..82d27114
--- /dev/null
+++ b/studies/NewiOSPlaylistUIStudy.json5
@@ -0,0 +1,29 @@
+[
+  {
+    name: 'NewiOSPlaylistUIStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'NewPlaylistUI',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+      ],
+      platform: [
+        'IOS',
+      ],
+    },
+  },
+]
diff --git a/studies/PartitionedCookies.json5 b/studies/PartitionedCookies.json5
new file mode 100644
index 00000000..3ef1b5a8
--- /dev/null
+++ b/studies/PartitionedCookies.json5
@@ -0,0 +1,34 @@
+[
+  {
+    name: 'PartitionedCookies',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'PartitionedCookies',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '122.1.63.0',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/PostFREFixMetricsAndCrashSampling.json5 b/studies/PostFREFixMetricsAndCrashSampling.json5
new file mode 100644
index 00000000..df97f75e
--- /dev/null
+++ b/studies/PostFREFixMetricsAndCrashSampling.json5
@@ -0,0 +1,30 @@
+[
+  {
+    name: 'PostFREFixMetricsAndCrashSampling',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'PostFREFixMetricsReporting',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/PrettyPrintJSONDocument.json5 b/studies/PrettyPrintJSONDocument.json5
new file mode 100644
index 00000000..8405a13c
--- /dev/null
+++ b/studies/PrettyPrintJSONDocument.json5
@@ -0,0 +1,31 @@
+[
+  {
+    name: 'PrettyPrintJSONDocument',
+    experiment: [
+      {
+        name: 'Disabled_EmergencyKillSwitch',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'PrettyPrintJSONDocument',
+          ],
+        },
+      },
+    ],
+    filter: {
+      min_version: '117.0.0.0',
+      max_version: '119.1.61.0',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/PrivateNetworkAccessKillswitch.json5 b/studies/PrivateNetworkAccessKillswitch.json5
new file mode 100644
index 00000000..1f539d11
--- /dev/null
+++ b/studies/PrivateNetworkAccessKillswitch.json5
@@ -0,0 +1,32 @@
+[
+  {
+    name: 'PrivateNetworkAccessKillswitch',
+    experiment: [
+      {
+        name: 'Disabled_PrivateNetworkAccessKillSwitch',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'PrivateNetworkAccessForNavigations',
+            'PrivateNetworkAccessForNavigationsWarningOnly',
+          ],
+        },
+      },
+    ],
+    filter: {
+      min_version: '123.*',
+      max_version: '125.*',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/RendererAllocatesImagesKillSwitch.json5 b/studies/RendererAllocatesImagesKillSwitch.json5
new file mode 100644
index 00000000..8b514ed8
--- /dev/null
+++ b/studies/RendererAllocatesImagesKillSwitch.json5
@@ -0,0 +1,28 @@
+[
+  {
+    name: 'RendererAllocatesImagesKillSwitch',
+    experiment: [
+      {
+        name: 'Disabled_RendererAllocatesImages',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'RendererAllocatesImages',
+          ],
+        },
+      },
+    ],
+    filter: {
+      min_version: '122.*',
+      max_version: '124.*',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'MAC',
+      ],
+    },
+  },
+]
diff --git a/studies/SidebarEnabledStudy.json5 b/studies/SidebarEnabledStudy.json5
new file mode 100644
index 00000000..9be18c92
--- /dev/null
+++ b/studies/SidebarEnabledStudy.json5
@@ -0,0 +1,43 @@
+[
+  {
+    name: 'SidebarEnabledStudy',
+    experiment: [
+      {
+        name: 'group_A',
+        probability_weight: 2,
+        feature_association: {
+          enable_feature: [
+            'SidebarShowAlwaysOnStable',
+          ],
+        },
+      },
+      {
+        name: 'group_B',
+        probability_weight: 2,
+        feature_association: {
+          enable_feature: [
+            'SidebarShowAlwaysOnStable',
+          ],
+        },
+        param: [
+          {
+            name: 'open_one_shot_leo_panel',
+            value: 'true',
+          },
+        ],
+      },
+      {
+        name: 'Default',
+        probability_weight: 96,
+      },
+    ],
+    filter: {
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+      ],
+    },
+  },
+]
diff --git a/studies/SmilAutoSuspendOnLagKillSwitch.json5 b/studies/SmilAutoSuspendOnLagKillSwitch.json5
new file mode 100644
index 00000000..5a2d7de1
--- /dev/null
+++ b/studies/SmilAutoSuspendOnLagKillSwitch.json5
@@ -0,0 +1,31 @@
+[
+  {
+    name: 'SmilAutoSuspendOnLagKillSwitch',
+    experiment: [
+      {
+        name: 'Disabled_EmergencyKillSwitch',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'SmilAutoSuspendOnLag',
+          ],
+        },
+      },
+    ],
+    filter: {
+      min_version: '118.*',
+      max_version: '120.*',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/Speedreader TTS.json5 b/studies/Speedreader TTS.json5
new file mode 100644
index 00000000..7bb072ea
--- /dev/null
+++ b/studies/Speedreader TTS.json5	
@@ -0,0 +1,37 @@
+[
+  {
+    name: 'Speedreader TTS',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'Speedreader',
+          ],
+        },
+        param: [
+          {
+            name: 'tts',
+            value: 'true',
+          },
+        ],
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+      ],
+    },
+  },
+]
diff --git a/studies/UndecryptablePasswords.json5 b/studies/UndecryptablePasswords.json5
new file mode 100644
index 00000000..24267b24
--- /dev/null
+++ b/studies/UndecryptablePasswords.json5
@@ -0,0 +1,33 @@
+[
+  {
+    name: 'UndecryptablePasswords',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'SkipUndecryptablePasswords',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '127.1.68.107',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/UseWritePixelsYUV.json5 b/studies/UseWritePixelsYUV.json5
new file mode 100644
index 00000000..6bb457ec
--- /dev/null
+++ b/studies/UseWritePixelsYUV.json5
@@ -0,0 +1,31 @@
+[
+  {
+    name: 'UseWritePixelsYUV',
+    experiment: [
+      {
+        name: 'Disabled_UseWritePixelsYUV',
+        probability_weight: 100,
+        feature_association: {
+          disable_feature: [
+            'UseWritePixelsYUV',
+          ],
+        },
+      },
+    ],
+    filter: {
+      min_version: '123.*',
+      max_version: '125.*',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+        'ANDROID',
+      ],
+    },
+  },
+]
diff --git a/studies/UserActivityStudy.json5 b/studies/UserActivityStudy.json5
new file mode 100644
index 00000000..61948c38
--- /dev/null
+++ b/studies/UserActivityStudy.json5
@@ -0,0 +1,51 @@
+[
+  {
+    name: 'UserActivityStudy',
+    experiment: [
+      {
+        name: 'Triggers',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'UserActivity',
+          ],
+        },
+        param: [
+          {
+            name: 'triggers',
+            value: '0D0B14110D0B14110D0B14110D0B1411=-1.0;0D0B1411070707=-1.0;07070707=-1.0;0B1512=0.5;0B1513=0.5;0B1514=0.5;06=1.0;04=0.5',
+          },
+          {
+            name: 'time_window',
+            value: '1h',
+          },
+          {
+            name: 'threshold',
+            value: '0.5',
+          },
+          {
+            name: 'idle_time_threshold',
+            value: '5s',
+          },
+        ],
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '108.1.47.73',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/WhatsNewStudy.json5 b/studies/WhatsNewStudy.json5
new file mode 100644
index 00000000..72b20d93
--- /dev/null
+++ b/studies/WhatsNewStudy.json5
@@ -0,0 +1,32 @@
+[
+  {
+    name: 'WhatsNewStudy',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        param: [
+          {
+            name: 'target_major_version_stable',
+            value: '1.65',
+          },
+        ],
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '119.1.60.114',
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+        'MAC',
+        'LINUX',
+      ],
+    },
+  },
+]
diff --git a/studies/WorkaroundNewWindowFlash.json5 b/studies/WorkaroundNewWindowFlash.json5
new file mode 100644
index 00000000..7d47f250
--- /dev/null
+++ b/studies/WorkaroundNewWindowFlash.json5
@@ -0,0 +1,75 @@
+[
+  {
+    name: 'WorkaroundNewWindowFlash',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveWorkaroundNewWindowFlash',
+          ],
+        },
+      },
+      {
+        name: 'Disabled',
+        probability_weight: 0,
+        feature_association: {
+          disable_feature: [
+            'BraveWorkaroundNewWindowFlash',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '127.1.70.49',
+      channel: [
+        'NIGHTLY',
+        'BETA',
+      ],
+      platform: [
+        'WINDOWS',
+      ],
+    },
+  },
+  {
+    name: 'WorkaroundNewWindowFlash',
+    experiment: [
+      {
+        name: 'Enabled',
+        probability_weight: 100,
+        feature_association: {
+          enable_feature: [
+            'BraveWorkaroundNewWindowFlash',
+          ],
+        },
+      },
+      {
+        name: 'Disabled',
+        probability_weight: 0,
+        feature_association: {
+          disable_feature: [
+            'BraveWorkaroundNewWindowFlash',
+          ],
+        },
+      },
+      {
+        name: 'Default',
+        probability_weight: 0,
+      },
+    ],
+    filter: {
+      min_version: '127.1.70.49',
+      channel: [
+        'RELEASE',
+      ],
+      platform: [
+        'WINDOWS',
+      ],
+    },
+  },
+]