Security Tools

Decode JWTs, make hashes and checksums, and generate UUIDs and random tokens. Secrets stay on your device.

Every tool runs entirely in your browser. Nothing you enter is sent to the server.

Read a JSON Web Token's header and claims, and check its signature.

MD5, SHA-1, SHA-256, SHA-512 and more, for text or a file.

Generate UUIDs (v4 and v7) and random tokens for keys and secrets.

Password Tools

Create a strong random password.

See how long a password would take to crack, and how to improve it.

Count characters, bytes, words, lines and unique words.

Encode text to Base64 or decode Base64 back to text.

Convert text to hexadecimal and hex back to text.

Convert text to binary and binary back to text.

Write text backwards, character by character.

Turn text into rAnDoM cAsE.

Count and highlight how often a word or phrase appears in text.

Convert between decimal, hex, binary, octal and any base from 2 to 36.

Convert Unix (epoch) timestamps to dates, and dates to timestamps.

Convert between bytes, KB, MB, GB and TB, and KiB, MiB, GiB and TiB.