JWT Decoder & Inspector
Paste a token and see exactly what's inside — header, payload, every claim, and whether it has expired. Nothing is verified against a server, so this is for learning, not login checks.
Token
Decoded token
Header
Payload
Signature
Time claims
All payload claims
Hash Generator
Type anything and get its SHA family digests, computed locally with the Web Crypto API. Paste a known hash below to check for a match.
Input
Digests
Compare against a known hash
Browser Storage Manager
This page's own localStorage and sessionStorage, laid bare. Add keys, tweak values, export a snapshot — great for seeing what websites actually save about you.
JSON Diff Tool
Drop two JSON documents in and spot every key that was added, removed, or changed. Invalid JSON gets a precise parser error, not a shrug.
Differences