Bulk file renamer
Preview prefixes, suffixes, literal replacements and numbered filenames, then download byte-preserving copies in a ZIP.
Your workspace
On-device processingLoading the tool…
Your files and text are processed in this browser. They are not uploaded to our server. Closing or refreshing the page clears your work.
A closer look
Preview prefixes, suffixes, literal replacements and numbered filenames, then download byte-preserving copies in a ZIP.
A practical example
Rename product photos to shop_001.jpg and shop_002.jpg while keeping their original extensions and bytes.
Common questions
Will the original files or their contents change?
No. The tool creates ZIP copies and preserves each file’s bytes and extension. Unsafe names are normalized; duplicate names receive a numbered suffix.
How to use this tool
- Choose your local files or enter a signature. Check the supported formats and limits below.
- Rename product photos to shop_001.jpg and shop_002.jpg while keeping their original extensions and bytes.
- Create and inspect the result, then download a copy. Your original is not overwritten.
Before you start
Up to 100 files / 50 MB total, 20 MB per file. Downloads ZIP copies without renaming originals. Literal case-sensitive replacement, not regular expressions. Original extensions and contents are retained; unsafe names and case-insensitive collisions are normalized. Folder trees, file timestamps and filesystem permissions are not preserved. No malware scan.
Quick answers
Does this tool send my input to a server?
No. Your input is processed in this browser. Download the result before closing the page; your workspace is not saved to an account.
What should I check before using the result?
Keep the original. Check the output’s content, layout, quality and format before sharing it or using it for important work. Review the limitations above for details.
Browse every tool by category
Choose a category to reveal its complete list. All tools have their own instructions, supported formats and limits.
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