🔑 JWT Decoder & Inspector

Component: src/sidepanel/tools/JwtDecoder.tsx
Styles: src/sidepanel/tools/JwtDecoder.css

Overview

Inspect JSON Web Tokens (JWT) client-side with zero data transmission. Decodes Header, Payload claims, and provides human-readable dates for timestamps.

Features

• Split Part Colorizer: Distinct color-coding for Header (Red/Pink), Payload (Purple/Cyan), and Signature (Cyan/Blue).
• Token Expiration Tracker: Evaluates exp, nbf, and iat claims, displaying live countdown status (Active, Expiring Soon, Expired).
• Standard Claim Hints: Displays descriptive labels for standard registered claims (iss, sub, aud, exp, nbf, iat, jti).
• Signature Verification Notice: Clarifies client-side signature status while keeping parsing 100% private and offline.