diff --git a/_specs/metanorma-model-csd.adoc b/_specs/metanorma-model-csd.adoc
index e991d477..175d2a0a 100644
--- a/_specs/metanorma-model-csd.adoc
+++ b/_specs/metanorma-model-csd.adoc
@@ -2,6 +2,21 @@
 title: Metanorma CSD Models
 description: Data models for Metanorma CalConnect.
 source_url: https://github.com/riboseinc/metanorma-model-csd
+
+spec_source:
+  git_repo_url: https://github.com/riboseinc/metanorma-model-csd
+  git_repo_subtree: images
+  build:
+    engine: png_diagrams
+
+navigation:
+  sections:
+  - name: Model diagrams
+    items:
+    - title: "CSD Standard Document"
+      path: "Csd_CsdStandardDocument"
+      description: ""
+      ignore_missing: yes
 ---
 
 Metanorma CSD is a set of data models for CalConnect Standard Documents.
diff --git a/_specs/metanorma-model-gb.adoc b/_specs/metanorma-model-gb.adoc
index f4a7da70..2f1f4785 100644
--- a/_specs/metanorma-model-gb.adoc
+++ b/_specs/metanorma-model-gb.adoc
@@ -2,6 +2,31 @@
 title: Metanorma GbDoc Models
 description: Data models for Metanorma GbDoc.
 source_url: https://github.com/riboseinc/metanorma-model-gb
+
+spec_source:
+  git_repo_url: https://github.com/riboseinc/metanorma-model-gb
+  git_repo_subtree: images
+  build:
+    engine: png_diagrams
+
+navigation:
+  sections:
+  - name: Model diagrams
+    items:
+    - title: "GB Doc Models"
+      path: "GbDoc_GbDoc"
+      description: ""
+      ignore_missing: yes
+    - title: "GB Standard Prefix"
+      path: "GbDoc_GbStandardPrefix"
+      description: ""
+      ignore_missing: yes
+  - name: Document appearance
+    items:
+    - title: "Cover page elements"
+      path: "gb-standard-coverpage-elements"
+      description: ""
+      ignore_missing: yes
 ---
 
 Metanorma GbDoc is a family of document models used to represent
diff --git a/_specs/metanorma-model-iso.adoc b/_specs/metanorma-model-iso.adoc
index 3507d2dc..bb741037 100644
--- a/_specs/metanorma-model-iso.adoc
+++ b/_specs/metanorma-model-iso.adoc
@@ -2,6 +2,29 @@
 title: Metanorma IsoDoc Models
 description: Data models for Metanorma IsoDoc.
 source_url: https://github.com/riboseinc/metanorma-model-iso
+
+spec_source:
+  git_repo_url: https://github.com/riboseinc/metanorma-model-iso
+  git_repo_subtree: images
+  build:
+    engine: png_diagrams
+
+navigation:
+  sections:
+  - name: Model diagrams
+    items:
+    - title: "ISO Standard Document"
+      path: "IsoDoc_IsoStandardDocument"
+      description: ""
+      ignore_missing: yes
+    - title: "ISO Blocks"
+      path: "IsoDoc_IsoBlocks"
+      description: ""
+      ignore_missing: yes
+    - title: "ISO Bibliographic Item"
+      path: "IsoDoc_IsoBibliographicItem"
+      description: ""
+      ignore_missing: yes
 ---
 
 Metanorma IsoDoc is a family of document models intended to represent
diff --git a/_specs/metanorma-model-m3d.adoc b/_specs/metanorma-model-m3d.adoc
index def07486..acfba4f6 100644
--- a/_specs/metanorma-model-m3d.adoc
+++ b/_specs/metanorma-model-m3d.adoc
@@ -2,6 +2,21 @@
 title: Metanorma M3D Models
 description: Data models for Metanorma M3AAWG.
 source_url: https://github.com/riboseinc/metanorma-model-m3d
+
+spec_source:
+  git_repo_url: https://github.com/riboseinc/metanorma-model-m3d
+  git_repo_subtree: images
+  build:
+    engine: png_diagrams
+
+navigation:
+  sections:
+  - name: Model diagrams
+    items:
+    - title: "M3AAWG Document Model"
+      path: "M3aawg_M3aawgDocument"
+      description: ""
+      ignore_missing: yes
 ---
 
 Metanorma M3D is a set of data models for M3AAWG Documents.
diff --git a/_specs/metanorma-model-rsd.adoc b/_specs/metanorma-model-rsd.adoc
index 85d5cc2b..2c82f549 100644
--- a/_specs/metanorma-model-rsd.adoc
+++ b/_specs/metanorma-model-rsd.adoc
@@ -2,6 +2,21 @@
 title: Metanorma RSD Models
 description: Data models for Metanorma RSD.
 source_url: https://github.com/riboseinc/metanorma-model-rsd
+
+spec_source:
+  git_repo_url: https://github.com/riboseinc/metanorma-model-rsd
+  git_repo_subtree: images
+  build:
+    engine: png_diagrams
+
+navigation:
+  sections:
+  - name: Model diagrams
+    items:
+    - title: "RSD Standard Document"
+      path: "Rsd_StandardDocument"
+      description: ""
+      ignore_missing: yes
 ---
 
 Metanorma RSD is a set of data models for Ribose Specification Documents.