Rename Files in Bulk
Rename many files at once with a pattern — date, number, original name — and sort photos into year and month folders by the date they were taken.
Free No signup Runs in your browser — nothing uploaded
What it does
Rename Files in Bulk reads your files, rearranges them and writes new ones — renamed, merged or unpacked — without changing the originals you dropped in.
When you need it
Tidying up after the fact: a folder of photos named IMG_4821, twelve monthly exports to put in one sheet, an archive somebody sent that you want to look inside before trusting it.
Limits and caveats
Everything is held in memory while it works, so a very large batch is limited by your device. The result comes back as a download (a ZIP when there are many files). Everything happens in your browser, so the file never leaves your device.
How to rename files in bulk
- Drop or choose your file file.
- KIVO processes it instantly — no waiting for uploads.
- Download the result. That's it.
Frequently asked questions
- Which date is used for photos?
- The one the camera wrote inside the photo (EXIF), when it is there; otherwise the file's own date. The page says how many of each.
- Are my original files changed?
- No. You download a ZIP with renamed copies.
- Do my files get uploaded?
- No. This tool runs entirely in your browser, so the file never leaves your device.