Bulk File Renamer
Rename hundreds of files at once using flexible patterns — prefix, suffix, sequential numbers, find & replace, case conversion and more. Preview every change live, then download as a ZIP. Your files never leave your device.
Drop files here
Any file type — all renaming is in-browser
Rename Settings
Prefix & Suffix
Remove Characters
No files yet
Drop files above or click Browse Files — then configure rename rules and download the ZIP.
Frequently Asked Questions
- Is the Bulk File Renamer free?
- Yes, completely free. No account, no subscription, no file count limits.
- Are my files uploaded anywhere?
- No. All renaming happens in your browser using JavaScript. Your files are read into memory locally — nothing is sent to any server.
- How do I add sequential numbers to filenames?
- Enable the 'Sequential Number' option, set your template (e.g. photo_{n}), choose the starting number, and set the zero-padding width. Files will be numbered in the order they were dropped.
- Can I use regular expressions for find and replace?
- Yes. Enable 'Find & Replace', turn on the 'Regex' toggle, and enter a valid JavaScript regular expression pattern in the Find field.
- What file types does it support?
- It works with any file type — images, videos, documents, audio, PDFs, spreadsheets, or any other file. Only the filename is changed; the file content is never modified.
- Does it work on mobile?
- Yes, it works on all modern browsers including mobile Safari and Chrome on iOS and Android.