DevToolbox: Hash & UUID Tools

Hash text, mint version-4 UUIDs, decode JSON Web Tokens, and build standard five-field cron expressions in one compact toolbox.

Key features

• MD5, SHA-1, SHA-256, and SHA-512 digests from the text you type

• Version-4 UUID generation with copy, letter case, and hyphen options

• JWT header and payload decode — the signature is shown, never verified

• Five-field cron builder and parser, with clear errors for macros and ambiguous day fields

Made for developers who need these four checks without switching apps.