Bulk File Renamer
Newbulk file renamer · batch rename files · bulk rename files · rename files · file renamer
General(1 on)
📁
Drop files here or click to choose
Any file type · processed in your browser
🔒 Files never leave your device — everything runs in your browser.
ℹ️ Browsers can't rename your original files, so the renamed copies download as a zip — your originals stay untouched.
How to use
- 1
Drop or choose your files (any type, many at once).
- 2
Turn on the rename rules you need and check the live preview.
- 3
Optionally pick which extensions to rename when types are mixed.
- 4
Download the renamed files as a zip.
FAQ
Is this tool free?
Yes — no sign-up, no installation, completely free to use right away.
What is this tool?
Bulk File Renamer renames many files at once — PDFs, documents, archives, images, anything. Drop your files, switch on the rules you need (prefix/suffix, sequential numbering, find-and-replace, case, spaces, date, truncate, lowercase extensions) and watch the new names update live. When several file types are mixed you can pick which extensions to rename. Because browsers cannot rename your original files in place, the renamed copies are bundled into a zip you download — your originals stay untouched. Everything runs in your browser; no file is uploaded.
Does it change my original file names?
No. Browsers can't rename your files in place, so the tool bundles renamed copies into a zip you download. Your original files stay exactly as they are.
Can I rename any file type?
Yes — PDFs, Office documents, archives (zip), images, text, anything. Only the names change; the file contents are untouched.
Are my files uploaded to a server?
No. Everything runs locally in your browser. Your files never leave your device.
What if I mix different file types?
You can use the extension filter to rename only certain types (e.g. only PDFs). Files of other types keep their original names in the zip.