File Hash Checker
Upload any file and the tool computes both its SHA-256 and MD5 hash values entirely in your browser. SHA-256 is computed using the Web Crypto API; MD5 is computed using the SparkMD5 library. Both hashes are displayed and can be copied with one click.
You can also paste an expected hash value — the tool compares it (case-insensitively) against both computed hashes and tells you whether it matches. This is the standard way to verify that a downloaded file hasn't been corrupted or tampered with.
Everything runs in your browser — your file is never uploaded to a server.
By The Paper Room Editorial Team — File Tools
Frequently asked questions
What's the difference between SHA-256 and MD5?▼
SHA-256 produces a 64-character hex string and is cryptographically secure — it's used for security-critical verification. MD5 produces a 32-character hex string and is faster but cryptographically broken (collisions can be manufactured). MD5 is still widely used for simple file integrity checks where security isn't the concern.
Is my file uploaded anywhere?▼
No — the hash is computed entirely in your browser. SHA-256 uses the built-in Web Crypto API; MD5 uses an in-browser JavaScript library. Your file never leaves your computer.
Why would I verify a file hash?▼
Software download pages often publish a hash alongside the download. After downloading the file, computing its hash and comparing it to the published value confirms the file wasn't corrupted during transfer and hasn't been tampered with.