Batch File Renamer — Step-by-Step Guide
Learn how to use Batch File Renamer: step-by-step instructions, settings, export options, privacy, limits and troubleshooting.
Open Batch File RenamerStep-by-step instructions
- Choose the files to copy into a renamed ZIP.
- Set literal find and replace, prefix, suffix, numbering, case and extension rules.
- Review every old-to-new name. Resolve collisions or choose Add a number.
- Export the ZIP and mapping reports, then extract copies to your chosen folder.
Processing limits
Up to 20 files, 20 MB per file and 24 MB combined; empty files supported. ZIP output is capped at 26 MB.
Formats and important details
Renaming never writes to, deletes or overwrites the original files. ZIP entries contain the original file bytes under new, flat names. Folder structure is not retained.
Find and replace is case-sensitive and literal, not a regular expression. Case changes apply to the base name; extension handling is separate. Changing an extension does not convert file contents.
Control characters, reserved characters, directional overrides, paths and device names are sanitized. Names are normalized and limited to 180 UTF-8 bytes. Collisions are checked without case sensitivity; reject them or add a number. Review sanitized names before export.
Privacy and downloads
All processing happens on this device. Successful results become available after the normal access confirmation. Keep the page open until processing finishes and save your downloads before leaving.
Processing and privacy
Files and entered content are processed on your device in this browser tab. File contents and results are not uploaded to Helphonic or sent to analytics. The page still contacts Helphonic to load its tools, check access and confirm non-content usage information. Work is not saved to your account; download or copy results before leaving or reloading the page.
Access and current limits
Check the tool page for current access, remaining usage and per-operation limits. File count, per-file size, total size and page limits can depend on your access and can change. Device and processor safety limits still apply when usage is unlimited. A paid pass does not necessarily increase every processing limit.
One successful export counts as one operation. Previewing and editing do not use an operation. Daily allowances reset at 00:00 UTC. Downloads of an already-created result do not count again.
If an operation cannot finish
Use a current browser and smaller inputs if the tab runs out of memory. Some tools download a local processing library or model on first use, so an internet connection is needed even though your content stays on the device.
If the tool reports that access or limits changed, review the current policy and run it again. If usage confirmation is uncertain after an interrupted connection, a retry can count as another operation. Download completed work before reloading; this site does not keep a recovery copy.
Check the current limits
Allowances and per-operation limits can change. The Batch File Renamer page shows the policy that applies to you. Per-operation safety limits still apply when usage is unlimited. See access passes if a tool or extra usage requires paid access.
For site-wide information, read the privacy policy and security details.