About this tool
Batch File Prefixer is part of our File Tools collection. It is designed for a clear, fast workflow with practical options, useful output, and privacy-aware processing.
Batch File Prefixer
Batch File Prefixer runs entirely in your browser. Files are never uploaded to our server.
Drop your file here or click to chooseMultiple files supported
✓Your files are processed in your browser — nothing is uploaded to our servers.
Privacy-first processing
Your files are processed in your browser — nothing is uploaded to our servers.
Frequently asked questions
Can I use Batch File Prefixer for free?
Yes. You can use the core Batch File Prefixer workflow for free.
How are my files handled?
Your files are processed entirely in your browser. File contents are never uploaded to our server.