How to batch rename files on Mac

The simplest method: SeventyRename

Install SeventyRename, drop your files into the window (drag and drop, or the "Choose files…" button), then set one or several rules: search/replace, prefix, suffix (before the extension), automatic numbering, lowercase. A Before / After table shows the exact result before anything is written to disk, conflicts (duplicates, name already taken) show in red, and one click on "Rename" applies the whole batch at once.

Download the free SeventyRename trial (7 days, macOS 13+).

Why not rename one by one in Finder

• A whole batch at once: no more clicking, typing, confirming on every single file when you have dozens of them.
• A preview before acting: you see the full result, row by row, before anything gets written to disk.
• Zero accidental overwrite: conflicts are blocking, the Rename button stays disabled while one remains.

Rules that combine

Search/replace part of the name, add a prefix ("trip-"), a suffix before the extension, number instead of the name (starting number and digit padding adjustable), lowercase everything: each rule can be used alone or combined with the others, the Before / After table updates live.

Made a mistake? Undo it

After applying a batch, the "Undo last batch" button restores every file to its original name, in reverse order. This safety net stays available as long as you haven't started a new batch.

Mistakes to avoid

• Renaming one by one in Finder: slow, and no preview of the final result before clicking.
• Using a script with no prior check: an undetected conflict can overwrite an existing file.
• Forgetting to check the red rows in the preview before clicking Rename.

Get SeventyRename: 7-day trial, then a lifetime license.