🏷️ Bulk File Renamer

Tidy up exports, B-roll clips, thumbnails or photo dumps: preview the new names, fix conflicts and download everything renamed in one ZIP. Files stay on your device.

✅ Free · No sign-up

Choose files or drag them here
Any file type · up to 1,000 files · processed locally

Find

Replace with

Find options Regular expression Match case

Prefix

Suffix

Name case

Spaces

Numbering Add numbers

Number position

Start · step · digits

Separator

Date Insert date

Date source

Format

Position

Extension

File order (for numbering)

Conflicts Auto-number duplicate names

#	Original	New name	Status

How to use the Bulk File Renamer

Add files (they are only read when you download).
Combine find & replace, prefix/suffix, numbering, dates and case changes.
Check the live preview: conflicts and invalid names are highlighted.
Download a ZIP containing the renamed copies, plus an optional CSV of old → new names.

Example

Input: IMG_4512.JPG, IMG_4513.JPG with prefix “tokyo-”, numbering after name, lowercase extension
Output: tokyo-img_4512-001.jpg, tokyo-img_4513-002.jpg

Why creators use it

Name B-roll clips in shooting order before editing.
Give thumbnails and assets consistent, searchable names.
Prepare files for clients with dated, numbered names.

Good to know

Browsers cannot rename files on your disk directly. You get renamed copies in a ZIP; your originals are untouched.
Very large sets (several GB) may exceed your device memory; the tool warns before building the ZIP.

Frequently asked questions

Are my files uploaded?

No. They are read and zipped in your browser.

What counts as a conflict?

Two files that would end up with the same name, ignoring letter case (Windows and macOS treat “A.jpg” and “a.jpg” as the same file).

Does it keep file contents unchanged?

Yes. Files are stored byte-for-byte in the ZIP without recompression of their content.