Checksum Verifier
Compute and verify file checksums
100% private — everything stays in your browser
Drop a file here or click to select
How to use Checksum Verifier
- 1 Configure your settings — Adjust the options for the Checksum Verifier tool — length, character sets, or input values.
- 2 Get your result — Results are generated instantly using the Web Crypto API built into your browser. Nothing is sent to any server.
- 3 Copy or download — Copy the result to your clipboard or download it. Your data never leaves your device.
Frequently asked questions
- Is there a file size limit?
- There's no server-imposed limit since everything runs on your device. The practical limit depends on your browser's available memory — most files up to a few hundred MB work fine.
- How is randomness generated?
- All randomness comes from the Web Crypto API (crypto.getRandomValues), which is a cryptographically secure random number generator built into your browser.