Online Tool Store
Bulk Image Naming Tool
Load image files or paste filenames, set a prefix, suffix, starting number, and zero-padding, then download a local rename mapping as CSV.
This works right here on your device — nothing gets sent out.
How the batch image renamer works
- Enter one image filename per line.
- Choose a prefix, suffix, starting number, and optional zero-padding.
- Review the rename mapping, copy it, or download it as CSV.
Best for
Create a clear rename plan for a folder of images without uploading filenames or creating an account.
This browser-only tool prepares a mapping; apply the new names in your file manager after reviewing the preview.
FAQ
What does this tool create?
It creates an original-to-new filename mapping using sequential numbers, a prefix, a suffix, and the original file extensions.
Does it rename files on my device automatically?
No. Browsers cannot silently rename files in your folders. Download the CSV mapping and apply it in your file manager.
Does it send my filenames anywhere?
No. The mapping is generated locally in your browser.
How does zero-padding work?
A padding value of 2 produces 01, 02, and 03; a value of 3 produces 001, 002, and 003.
How we compare
| Feature | Online Tool Store | Bulk Pics | PowerRename |
|---|---|---|---|
| Works from a simple filename list | ✓ | Varies | ✓ |
| Prefix, suffix, and numbering | ✓ | ✓ | ✓ |
| Downloadable rename mapping | ✓ | Varies | ✗ |
| Runs without uploading filenames | ✓ | Varies | ✓ |
Use this for a local rename plan; use a desktop renamer when you want to apply changes directly to a folder.