The smartest way to batch rename files on macOS.
Prefix, suffix, numbering, date, regex, case change — all with live preview.
FileRenamer gives you a clean two-panel interface — configure your rename rule on the left, then see every filename update in real time on the right before committing a single change.
Instantly add text before or after any filename.
Plain text or full regex with case-sensitive option.
Sequential numbers with custom start, step and padding.
Insert today's date in any format you choose.
lowercase, UPPERCASE, Title Case, camelCase, snake_case, kebab-case.
Removes underscores, dashes and dots — auto Title Case.
See every new name before applying a single change.
Drop files or entire folders directly into the app.