Generate strong passwords, measure how long one would really take to crack, produce and verify hashes, and inspect the tokens your applications pass around. Everything is computed in your browser: no password, secret or token you type here is transmitted or stored anywhere.
8 of 8 tools
Create strong random passwords with full control over length and characters.
Test how strong a password really is, and see exactly what weakens it.
Check a downloaded file against its published checksum, without uploading anything.
Decode JSON Web Tokens and read the header, claims and expiry.
Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes at once.
Generate memorable passphrases that are strong because they are long.
Generate a SHA-256 hash of any text, computed in your browser.
Generate an MD5 hash for checksums, cache keys and legacy systems.
Find the mean, median, mode and range of a list of numbers, with the working shown.
Sample and population standard deviation and variance, both shown, with the working.
Turn a logo into favicon.ico, the PNG sizes a site needs, and the HTML to declare them.