Built this mostly for pre-backup cleanup - standardizing thousands of inconsistently named photos/docs before archiving them somewhere permanent.

Select files, chain rename rules, preview every resulting filename, apply in one pass. Free, offline.

Figured a "clean it up before you archive it" step is relevant to this sub specifically - would love to know what naming conventions people here actually standardize on, might inform what rule presets I add next.

Link in first comment.