Bulk Image Rename — Batch Pattern Renamer, In-Browser
Rename hundreds of images at once with our free online batch renamer. Apply custom naming patterns with prefixes, suffixes, sequential numbering, and find-and-replace rules. All processing happens in your browser — your files are never uploaded anywhere, keeping your images completely private and secure.
File names matter more than they look: they are read by image search, they end up in alt-text defaults, and they are the difference between a folder of IMG_4417.JPG and one you can actually search. The renamer builds names from a pattern — prefix, sequence number with padding, original name, suffix — and shows the full before-and-after list before anything is written, so a bad pattern is caught in the preview rather than across 400 files. Find-and-replace handles the cases a pattern cannot, like stripping a client code from every file.
How to use Bulk Image Rename
- Upload multiple images of any format.
- Set a naming pattern with prefix, suffix, and numbering options.
- Optionally use find-and-replace and case conversion.
- Preview new filenames and download all as a ZIP archive.
Features
- Custom naming patterns — Set prefix, suffix, and base name for consistent organization.
- Sequential numbering — Configurable start number and zero padding (001, 002, 003).
- Find-and-replace — Replace text in existing filenames across all files at once.
- Case conversion — Convert filenames to uppercase, lowercase, or title case.
- Real-time preview — See new filenames before applying changes.
- 100% client-side — Files never leave your computer. Download as ZIP.
Frequently Asked Questions
How can I rename multiple images at once online?
Upload your images to our bulk renamer, set a naming pattern (e.g., "vacation-photo-" with sequential numbering), preview the results, and download the renamed files as a ZIP. The entire process runs in your browser — no software installation or server upload needed.
Can I add sequential numbers when batch renaming photos?
Yes. Our tool supports auto-numbering with customizable start number, step increment, and zero-padding (e.g., 001, 002, 003). Combine numbering with prefixes and suffixes to create organized filenames like "wedding-photo-001.jpg."
Is it safe to rename files using an online tool?
Our bulk renamer processes everything locally in your browser. Your images are never uploaded to any server — the renaming happens entirely on your device. This makes it completely safe for sensitive or personal photos.
Why bother renaming images before publishing them?
Because search engines read the file name as a signal about the picture, and IMG_4417.JPG says nothing. Descriptive, hyphenated names like blue-ceramic-vase-side-view.jpg help image search, give your CMS a sensible default alt text, and make the folder searchable a year later when you need that one photo.
Are my images uploaded to do the renaming?
No. Files are read locally and the renamed copies are written back to your device. That is also why the tool works with the network off. There is no upload, so a folder of client photos or personal pictures never leaves the machine.