Bulk File Renamer
Rename many files in one go. Add a prefix or suffix, number the files, find and replace text, or change letter case. Preview the new names, then download everything as a ZIP. Your files never leave your browser.
Drop files here or click to choose
Nothing is uploaded. Everything happens on your device.1. Set your rules
File extensions (like .jpg) are always kept unchanged.
2. Preview
| # | Original name | New name |
|---|
How to rename files in bulk
- Drop your files into the box above, or click it to choose files.
- Set one or more rules: find and replace, prefix, suffix, case, or numbering.
- Check the preview table. Any problems are highlighted in red.
- Click Download ZIP to get all files with their new names.
Frequently asked questions
Are my files uploaded anywhere?
No. The tool runs entirely in your browser. Your files are never sent to a server.
Does it rename my original files?
Browsers cannot rename files on your computer directly, so you download renamed copies in a ZIP. Your originals stay untouched.
Will the file extension change?
No. Only the name part is changed, so photo.jpg stays a .jpg file.
What happens if two files get the same name?
The tool highlights the duplicates and disables the download until you fix them, for example by adding numbering.
Is there a limit on the number or size of files?
There is no fixed limit, but the ZIP is built in your device's memory. Very large batches (several GB) may be slow on older phones or computers.