rName

rName renames your files in bulk, calmly and without surprises. Drop in a folder, build your rules, and the table in the middle shows you every new name next to the old one right away: nothing is touched on disk until you say so.

EIGHT RULES TO COMBINE
The new name comes from a chain of rules applied in order, from top to bottom. Drag them to reorder, switch them off without removing them.
• Replace — find and replace text, with regular expressions and $1 groups too.
• Insert text — a prefix, a suffix, or text at an exact position.
• Remove characters — a range, the first or last characters, or a recurring pattern.
• Numbering — a running sequence with start, step, digits, and separator.
• Letter case — lower case, UPPER CASE, Title Case, camelCase, PascalCase, snake_case, kebab-case.
• Date and time — the creation date, the modification date, or today's, in the format you pick.
• Extension — set it, normalise it, or remove it.
• Clean up name — double spaces, accents, emoji, invalid characters, spaces into _ or -.
Every rule can act on the name only, the extension only, or the whole file name.

PRESETS
Save a chain as a preset and call it back with one click. Four are ready to use: Tidy up names, Number in sequence, Date prefix, Web-friendly names.

NOTHING HAPPENS BEHIND YOUR BACK
• The preview is always there: you see the result before you confirm.
• Conflicts are found and set aside: names that would collide, files already on disk, invalid characters, names that are too long. Those files stay out of the operation instead of breaking it.
• Undo (⌥⌘Z) puts the files from the last operation back to their previous names.
• Swapping two names, or changing just the capitalisation, works: rName goes through a temporary name, and if anything fails it puts the original name back.

ONE FILE AT A TIME, TOO
Double-click a row and type the name by hand. That file stops following the rules and is marked with a pencil, until you send it back to the computed name.

YOUR PRIVACY, AND YOUR FILES
• No uploads, no account, no tracking.
• Renaming a file requires permission to modify the folder holding it: rName asks once per folder and remembers. Settings › Permissions lists them all, and you can revoke any of them whenever you like.
• Files never leave your Mac.

BUILT FOR macOS
• Drag files and folders into the window or onto the Dock icon, or use "Open With…" in Finder.
• Shortcuts: ⌘O to choose a folder, ⇧⌘O to add individual files, ⌘↩ to rename, ⌥⌘Z to undo.
• Light, dark, or automatic appearance; interface in English and Italian.

Handy for tidying up holiday photos, scanned documents, the files of a project, or a music library.