How to use Date Prefix File Renamer
- Select the files you want to process.
- Review the options and click Process files.
- Check the result summary, then download the generated output when available.
What this tool does
Add a consistent date prefix to file names using a chosen date or each file's last-modified date. It reads actual file names, paths, metadata, and bytes where the task requires them.
Processing and privacy
Processing happens locally in your browser. The page does not upload your selected files. Closing or resetting the page clears its working state.
Supported inputs and limits
Modern desktop browsers work best. Available memory, browser file limits, and operating-system naming rules may limit very large batches. Results are new downloads; originals are never silently changed.
Practical example
Select a small test batch first, confirm the preview or report, and then repeat the same settings with the full set. This makes naming and integrity jobs easier to audit.
Tips
- Keep a backup before reorganizing important files.
- Open generated archives and reports once before deleting any source copy.
- Use consistent names and checksum manifests when sharing a collection.
Frequently asked questions
Can I use date prefix file renamer without installing software?
Yes. This page runs in a modern browser and does not require a desktop installation.
Are my files uploaded while using this tool?
No. File contents are processed locally in your browser by the page.
What happens to the original files?
The tool never edits originals on disk. It creates a new download or a local inspection report.
Will this work with large files?
Browser memory and device limits still apply. Start with smaller batches when files are very large.
Can I use the result on Windows, macOS, and Linux?
Yes, although names and archive paths should still follow the rules of the destination system.