Batch File Renamer
Preview rename rules, numbering and patterns, then download renamed copies and a mapping report.
Your files, on your device
2 credits per completed taskDrag files here, or use the controls below. File contents stay on this device.
No files selected
Selected paths
Patterns: {name}, {n}, {ext}, {date} (modified date in UTC), {folder}. Regular expressions use JavaScript syntax; slow expressions are stopped during preview. Example: photo-{n} keeps the source extension. Collisions stop the operation. Renamed copies are downloaded in a ZIP; the original files stay unchanged. Up to 200 MiB total.
Choose files to begin.
How to use Batch File Renamer
- Choose your source files. Folder pickers preserve nested file paths where supported.
- Review the selection and available settings. Archive directories and rename previews can be inspected before processing.
- Select Download renamed copies, review the result, then download the files or report.
Privacy and practical limits
File contents are processed by local browser workers. The website checks your normal tool-credit allowance; files are not sent with those requests. Cancelling an unfinished task stops its worker. Keep the original files for comparison.
Reports display 100 rows per page and support filtering. Downloads contain the full result. Folder pickers do not expose empty directories. This tool handles the formats described above; it does not claim support for every archive or file format.
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