Mass Renamer - Rename Thousands Objects In Second

Mass Renamer handles a wide set of Blender data blocks: objects, collections, materials, textures, node groups, armatures and actions. A filtering system lets you narrow renaming to only the types you want, and you can choose whether to affect descendants or restrict changes to selected objects. This range makes it possible to clean up naming across an entire scene rather than one category at a time, which is useful for large scenes and assets with many named items to organize.

Mass Renamer supports find and replace using both wildcard rules and regular expressions. The wildcards include ?, * and %, and regex offers more precise pattern matching for batch processing names. Alongside this, it offers case conversion between UPPERCASE, lowercase, Title Case, snake_case, camelCase and PascalCase, plus prefix and suffix options, so you can restructure names in bulk with flexible matching and consistent formatting.

Mass Renamer includes rename-by-parent, which structures names based on an object's hierarchy, and L/R patterns that apply left and right naming for symmetrical objects. It also offers auto-increment for sequential numbering and random or dictionary-based names using custom dictionaries. Data Name Sync keeps object names consistent across the mesh, material and data blocks, helping avoid mismatched names in complex rigs and hierarchies.

Mass Renamer is listed as free in this catalog. Licensing details are provided by the developer, ThreeDee, on the product page, so check there for the current license terms before use. The add-on also comes with documentation and a beginner-friendly tutorial, and a demo video is available. For bug reports or feature requests, the developer can be contacted directly through the details on their page.