How to use Batch File Renamer
- Select the file or files requested by the tool.
- Review the options and choose settings that fit your job.
- Select Rename Files, inspect the result, and download it.
FILE TOOL // 001
Batch File Renamer
Give a whole batch of files clear, consistent names in one pass. Set the numbering style, preview the results, and download a ZIP without uploading anything.
Processed locally in your browser
Choose files to rename
Multiple files supportedFileSizeType
No files selected.
Choose files to begin.0 files
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What this file tool does
Rename a group of files with a prefix, starting number, and optional original name, then download the renamed copies in one ZIP archive.
The result is calculated from the actual bytes and metadata of the files you provide, using browser-native APIs.
Your files stay in this browser tab. Performance and maximum file size depend on the memory available to your browser.
Supported inputs and limits
Use current desktop versions of Chrome, Edge, Firefox, or Safari. Browser memory and security restrictions may limit very large jobs.
| Input | Handling |
|---|---|
| User-selected files | Read locally |
| Generated result | Temporary browser download |
Example and practical tips
Try the tool on a small copy of your files first. Check the downloaded result before changing or deleting any original data.
- Keep a backup for important work.
- Avoid closing the tab during processing.
- Use clear output names so results are easy to identify later.
Frequently asked questions
Can I use the batch file renamer without uploading files?
Yes. Processing happens locally in your browser, and the page does not send the selected file contents to a server.
Will the batch file renamer change my original files?
No. Browser file access is read-only here. The tool creates a new downloadable result and leaves the originals untouched.
What happens if I close the tab before downloading?
The generated result is held temporarily in this tab. Closing or refreshing the page clears it, so download the result first.
Can I process very large files in a browser?
It depends on available memory, browser limits, and the operation. Start with a smaller batch if the page becomes slow or unresponsive.
Does a successful result guarantee that every file is safe?
No. This tool performs the stated file operation only. It is not an antivirus scanner and does not certify the trustworthiness of file contents.
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Processing details
| Stage | Where it runs |
|---|---|
| File reading | Your browser |
| Result creation | Your browser |
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