File Hash Checksum Verifier
Calculate SHA-256 and MD5 hash checksums to verify file integrity.
Runs entirely in your browser — your data is never uploaded to any server.
How it works
- Upload fileSelect any file
- Compute hashWeb Crypto SHA-256
- Compare digestMatch checksum
What this tool does
- SHA-256 & MD5 calculation
- Streams large files
- 100% local processing
Frequently Asked Questions
No. File bytes are read locally in WebAssembly.
Privacy and security
Your input is processed by JavaScript running inside your browser. Nothing you paste is sent over the network, logged, or stored — which is what makes this safe to use with production data. If you want to check this yourself: open your browser’s developer tools, switch to the Network tab, and use the tool — you will see no request carrying your file or input leave the page.