About this tool
File Signature Checker is part of our File Tools collection. It is designed for a clear, fast workflow with practical options, useful output, and privacy-aware processing.
File Signature Checker
File Signature Checker runs entirely in your browser. Files are never uploaded to our server.
Drop your file here or click to chooseChoose file
✓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 File Signature Checker for free?
Yes. You can use the core File Signature Checker workflow for free.
How are my files handled?
Your files are processed entirely in your browser. File contents are never uploaded to our server.