Bulk File Renamer
Add files, build a pattern, preview the result, and download a ZIP.
Add files to get started.
Drop files here, or select them from your device.
Create Pattern
Before → after
Add files to get started.
Select or drop files, then build a naming pattern to see a live before/after preview.
Renamed copies are created in your browser and packaged into a ZIP — your original files are never changed or uploaded.
Need help creating a consistent pattern? Try the File Name Generator
Frequently asked questions
Does this rename my original files?
No — the Bulk Renamer creates renamed copies and packages them into a ZIP you download; your original files are never modified.
What happens if two files would end up with the same name?
Any conflict is flagged and blocked before you can proceed — you'll need to adjust the pattern until every resulting filename is unique.
Can I bulk rename photos, images, or PDFs?
Yes — any file type works, since renaming only changes the filename, not the file's contents.
Do I need to install anything?
No — it runs entirely in your browser. Add files, build a pattern, preview the results, and download the ZIP.