Batch Rename Files

macOS Finder has a built-in batch rename that power users rely on constantly; Windows Explorer and most Linux file managers have nothing comparable. This tool brings that same capability to any browser, so you can tidy a folder of downloads, photos or exports without installing anything. Drop in the files and pick a rule — the list on the left immediately shows the original name beside the new one for every single file.

It mirrors Finder’s five modes. Replace text swaps a substring (with optional case-sensitivity or full regular expressions) — perfect for turning spaces into dashes or stripping a camera prefix. Add text puts a fixed prefix or suffix on every name, either before or after the extension. Name + number gives all files a common base and appends a padded counter like Photo-001, Photo-002. Format template lets you compose a name from tokens such as {name}, {date}, {counter:3} and {index}. Change case converts names to UPPERCASE, lowercase, Title Case or sentence case.

Safety comes first: if two files would end up with the same name, the preview flags the clash and export stays disabled until you fix the rule, so nothing is silently overwritten. The whole process is pure string manipulation in your browser, and the renamed files are written into one ZIP locally — your originals never leave your device. Because renaming happens on copies inside the archive, you keep the untouched source files on disk and decide yourself where to unpack the result.