ToolBoxy
🖼️

Bulk Image Renamer

batch rename images · bulk rename files · sequential file names · add prefix suffix · in browser

Preview : Seoul여행.jpg · MyHolidayPhotos.png · vacation pic.jpeg

General(1 on)

Makes only the file extension lowercase.
🖼️

Drag & drop images here, or click to select

JPG, PNG, WebP, GIF · processed in your browser

🔒 Your images are never uploaded. Everything is processed only inside this browser.

How to use

  1. 1

    Add your images.

  2. 2

    Turn on rename rules (prefix, numbering, find & replace…).

  3. 3

    Check the live name preview, then download as a zip.

  4. 4

    Browsers can't rename your originals in place, so the renamed copies are delivered 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 image renamer — batch rename many image files by rule (prefix, numbering, find & replace, case, date…) with a live preview, then download as a zip. Free and private, in your browser. You can use it for free with no sign-up or installation — just open the page and start right away.

Are my uploaded files sent to a server?

No. Everything runs only on your own computer, inside your browser, and your files are never sent to a server or anywhere else. So you can use it with complete peace of mind, without worrying about your file contents leaking.

How many images can I process at once?

There's no fixed limit — it runs in your browser, so it depends on your device's memory. Dozens to a few hundred images work smoothly; very large batches may take a little longer.

Are my photos altered?

No — the image data is untouched. Only the filename changes, and the renamed copies are packed into a zip (browsers can't rename your originals in place).