What is this for
"M-Cleaner" is the Blender add-on for automatically finding and removing duplicates of materials from the scene.
When you add objects from previously saved blend-files, external libraries, various asset- and kitbash- sets to the scene, your scene is filled with a large number of identical materials. With dozens of them in complex scenes. "M-Cleaner" finds the equal materials in the scene and removes duplicates, reassigning the single unique material to the objects.
Just press the "Clear materials" button (non-destructive)
M-Cleaner will automatically clear your scene of duplicates
"Merge by name" joins materials by name (destructive) - joins materials with .001, .002, etc.
If the "Remove unused" checkbox is on, duplicates will be removed from the scene immediately. If this checkbox is off, duplicates will remain in the scene with 0 users and will be deleted using regular Blender tools during the scene saving.
Add-on web page
For more information please visit https://b3d.interplanety.org/en/blender-add-on-m-cleaner
I would love to hear your feedback and issues to make the add-on better.
Download *.zip archive with the add-on distributive
In Blender: The "Preferences" window — Add-ons — Install... — specify downloaded archive
"3D Viewport" window - N-panel - the "M-Cleaner" tab
2.90, 2.91, 2.92, 2.93, 3.0