File Hash Checker
Calculate SHA-256 fingerprints locally to verify downloads without uploading files.
Local processingNo uploadNo accountNo tracking scripts
Choose a file to hashSHA-256 is calculated locally with your browser crypto API.
Choose a file to calculate its SHA-256 fingerprint.
Tool capability
Clear support notes help avoid overpromising. This page is a private browser utility, not a full desktop archive suite.
Supported now
- ✓ SHA-256 calculation
- ✓ Local browser crypto
- ✓ Download verification support
Not supported yet
- × Malware scanning
- × Identity verification
How this tool protects privacy
This page is designed to run inside your browser. The selected file is not uploaded by the static site. For sensitive archives, avoid tools that require a server upload before they explain how files are handled.
Limitations
Very large archives may be slow. Browser support differs for advanced compression methods. ZIP files using unsupported methods may still be inspected even when every entry cannot be extracted.