Why include MD5 if deprecated?

Still used for legacy verification and non-security checksums. Not for security-sensitive applications.

Can I verify a download?

Yes. Compute the hash and compare against the source's published hash.

Is SHA-256 collision-free?

No SHA-256 collision has ever been found. It is considered secure for all practical purposes.

Can hashes be reversed?

No. They are one-way functions. However, known inputs can be looked up in rainbow tables.

Hash Generator

Free online hash generator. Compute SHA-256, SHA-512, SHA-1, and MD5 hashes of files or text — client-side using the Web Crypto API. No upload required.

Free online hash generator. Compute SHA-256, SHA-512, SHA-1, and MD5 hashes of files or text — client-side using the Web Crypto API. No upload required. Enter text in the text input, or upload a file to hash. Click "Generate All Hashes" to compute SHA-256, SHA-512, SHA-1, and MD5 simultaneously. Copy individual hash values by clicking the copy button on each result. Download all hashes as a text file for verification or record-keeping. SHA-256 and SHA-512 use the Web Crypto API (subtle.digest). SHA-1 also uses Web Crypto. MD5 uses a pure JavaScript implementation. Your files and text never leave your browser.