Hash Checker: a practical guide

A hash is a fingerprint: a short string that changes completely if a single byte of the input changes. Useful for verifying that a downloaded file matches its published checksum, or for comparing two files without opening them. The tool runs locally, so the file never leaves your device.

A hash is a fingerprint: a short string that changes completely if a single byte of the input changes. Useful for verifying that a downloaded file matches its published checksum, or for comparing two files without opening them. The tool runs locally, so the file never leaves your device.

How to use it: Drop any file into the upload area to checksum it. Then Choose SHA-256, MD5, or both in the algorithm menu. Then Click "Compute checksum" and copy the digest you need. Then Compare it with the sender’s value, or re-run "Verify again" on a re-download..

SHA-256 for modern integrity checks. MD5 kept for legacy workflows. Re-run verification on the same file. Copy a digest or download a .txt report.

Try the tool

File Hash Checker (SHA-256 & MD5) — Compute a hash (MD5, SHA-1, SHA-256) of any file or text.