File Hash & Checksum Verifier
Calculate and verify MD5, SHA-1, and SHA-256 file checksums locally to detect corrupted or tampered downloads.
How to Use File Hash & Checksum Verifier
Select or drop any local file (processing is 100% in-browser).
Paste expected checksum provided by the software vendor.
Get instant MATCH (green) or MISMATCH (red) confirmation.
File Hash & Checksum Verifier runs 100% client-side in your web browser. Your data, passwords, keys, and files are processed using the Web Crypto API and never transmitted to any server. Zero telemetry, zero storage, zero cloud processing.
Frequently Asked Questions
Are large files uploaded to a server?
No! Files are streamed in chunks locally via HTML5 FileReader. No data leaves your machine.
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