MD5 has been broken for collision resistance since 2008 and the WebCrypto API deliberately omits it. If you need MD5, the publisher should ship a SHA-256 instead.

Is it safe to hash a confidential file here?

Yes. The file is loaded into the page and processed by the browser's WebCrypto implementation in-memory. No bytes are sent to CheckMySys — you can verify this in the Network tab.

Which hash should I use for checksums?

SHA-256 is the default for Linux distro releases, Git content addressing, and TLS fingerprints. Prefer SHA-384 or SHA-512 if you specifically need a longer digest.

Hash Generator

Hash any text or file with SHA-1, SHA-256, SHA-384, or SHA-512 via the WebCrypto API.

Input text

Encoded as UTF-8 before hashing. 43 characters.

SHA-1

SHA-256

SHA-384

SHA-512

Related tools

UUID Generator
Generate random v4 or time-sortable v7 UUIDs (RFC 4122 / RFC 9562), one at a time or in bulk.
Password Security
Check password strength, entropy, and estimated crack time.
Browser Info
See everything your browser reveals — languages, plugins, canvas fingerprint, WebGL, and more.