Checksum generator
Paste text or drop a file. Hashes are computed locally, the file never leaves your device.
Verify a download
Software sites often publish a SHA-256 next to the download link. Drop the file above and compare the SHA-256 line with the published value. If a single character differs, the file is not the one the author released.
About
A small page for checking downloads without installing anything. It uses the
browser's built-in Web Crypto implementation, so the numbers are the same ones
sha256sum would print. MD5 is left out on purpose: it is broken and
should not be used to verify anything.
Privacy
No uploads, no accounts, no analytics. Text and files are read by the page itself and discarded when you close the tab. The server only keeps short-lived access logs.