1. Install

Blender 4.2 or newer (extension): download addon_migration_checklist-0.1.2.zip and do not unzip it. Drag it onto the Blender window and confirm, or use Edit › Preferences › Get Extensions › ⌄ › Install from Disk….

Blender 3.6 to 4.1 (legacy add-on): download addon_migration_checklist-0.1.2-legacy-blender-3.6-4.1.zip and do not unzip it. Go to Edit › Preferences › Add-ons › Install…, choose the zip and press Install Add-on. Enable the checkbox next to "Development: Add-on Migration Checklist".

2. Compare your add-ons

1. Hover over the 3D Viewport, press N and open the Migration tab.
2. Select the From and To versions from the detected Blender config folders.
3. Press COMPARE.
4. The list shows each add-on with its status.

3. Export

Press EXPORT MD for a Markdown table, or EXPORT CSV for a plain CSV. Both save to ~/Documents.

4. Requirements

Blender 3.6 or newer. The two Blender versions must be installed on the same machine. Pure Python, no extra libraries, no internet connection.