diff --git a/README.md b/README.md
index 419e7f919a..8266fb2e4b 100644
--- a/README.md
+++ b/README.md
@@ -228,6 +228,7 @@ The following community-contributed extensions are available in [`catalog.commun
 | MAQA Jira Integration | Jira integration for MAQA — syncs Stories and Subtasks as features progress through the board | `integration` | Read+Write | [spec-kit-maqa-jira](https://github.com/GenieRobot/spec-kit-maqa-jira) |
 | MAQA Linear Integration | Linear integration for MAQA — syncs issues and sub-issues across workflow states as features progress | `integration` | Read+Write | [spec-kit-maqa-linear](https://github.com/GenieRobot/spec-kit-maqa-linear) |
 | MAQA Trello Integration | Trello board integration for MAQA — populates board from specs, moves cards, real-time checklist ticking | `integration` | Read+Write | [spec-kit-maqa-trello](https://github.com/GenieRobot/spec-kit-maqa-trello) |
+| MarkItDown Document Converter | Convert documents (PDF, Word, PowerPoint, Excel, and more) to Markdown for use as spec reference material | `docs` | Read+Write | [spec-kit-markitdown](https://github.com/BenBtg/spec-kit-markitdown) |
 | Memory Loader | Loads .specify/memory/ files before lifecycle commands so LLM agents have project governance context | `docs` | Read-only | [spec-kit-memory-loader](https://github.com/KevinBrown5280/spec-kit-memory-loader) |
 | Memory MD | Repository-native durable memory for Spec Kit projects | `docs` | Read+Write | [spec-kit-memory-hub](https://github.com/DyanGalih/spec-kit-memory-hub) |
 | MemoryLint | Agent memory governance tool: Automatically audits and fixes boundary conflicts between AGENTS.md and the constitution. | `process` | Read+Write | [memorylint](https://github.com/RbBtSn0w/spec-kit-extensions/tree/main/memorylint) |
diff --git a/extensions/catalog.community.json b/extensions/catalog.community.json
index 0c6e5cbfb3..27699b7113 100644
--- a/extensions/catalog.community.json
+++ b/extensions/catalog.community.json
@@ -1,6 +1,6 @@
 {
   "schema_version": "1.0",
-  "updated_at": "2026-04-24T14:00:00Z",
+  "updated_at": "2026-04-28T00:00:00Z",
   "catalog_url": "https://raw.githubusercontent.com/github/spec-kit/main/extensions/catalog.community.json",
   "extensions": {
     "aide": {
@@ -1167,6 +1167,45 @@
       "created_at": "2026-03-26T00:00:00Z",
       "updated_at": "2026-03-26T00:00:00Z"
     },
+    "markitdown": {
+      "name": "MarkItDown Document Converter",
+      "id": "markitdown",
+      "description": "Convert documents (PDF, Word, PowerPoint, Excel, and more) to Markdown for use as spec reference material in Spec Kit workflows.",
+      "author": "BenBtg",
+      "version": "1.0.0",
+      "download_url": "https://github.com/BenBtg/spec-kit-markitdown/archive/refs/tags/v1.0.0.zip",
+      "repository": "https://github.com/BenBtg/spec-kit-markitdown",
+      "homepage": "https://github.com/BenBtg/spec-kit-markitdown",
+      "documentation": "https://github.com/BenBtg/spec-kit-markitdown/blob/main/README.md",
+      "changelog": "https://github.com/BenBtg/spec-kit-markitdown/blob/main/CHANGELOG.md",
+      "license": "MIT",
+      "requires": {
+        "speckit_version": ">=0.1.0",
+        "tools": [
+          {
+            "name": "markitdown",
+            "version": ">=0.1.0",
+            "required": true
+          }
+        ]
+      },
+      "provides": {
+        "commands": 1,
+        "hooks": 0
+      },
+      "tags": [
+        "markdown",
+        "pdf",
+        "document-conversion",
+        "reference-material",
+        "extraction"
+      ],
+      "verified": false,
+      "downloads": 0,
+      "stars": 0,
+      "created_at": "2026-04-28T00:00:00Z",
+      "updated_at": "2026-04-28T00:00:00Z"
+    },
     "memory-loader": {
       "name": "Memory Loader",
       "id": "memory-loader",