Secure JWT Decoder
in your browser
Parsy transforms raw API responses, config files, and tokens into beautiful, interactive views — instantly. No copy-pasting, no external tools.
One extension, 10 formats
Parsy automatically detects and renders the right view — no configuration needed.
Built for developers
Every feature is crafted for speed and productivity. No bloat, no tracking.
Interactive Tree View
Collapsible nodes at every level. Click any value to copy it instantly. Auto-expand depth configurable from settings.
Real-Time Search
Press Ctrl+F to search across all keys and values. Navigate matches with Enter and Shift+Enter for lightning-fast inspection.
Dark & Light Themes
Premium glassmorphism design in both modes. Switch themes instantly from the toolbar or popup panel.
JWT Decoder
Navigate to a JWT and see decoded header, payload claims with human-readable timestamps, and visual expiry status.
File Viewer
Open the built-in viewer to drag & drop local files. Supports all formats — CSV, YAML, TOML, and more. 100% local.
Zero Dependencies
100% pure JavaScript. No external libraries, no network requests, no tracking. Your data never leaves your browser.
Premium developer experience
Every pixel is designed to reduce friction and enhance readability.
Stop squinting at raw data
Install Parsy in one click. Free forever, no account needed.
Install on Chrome — It's FreeThe Ultimate JWT Decoder Chrome Extension
JSON Web Tokens (JWT) are ubiquitous in modern web authentication, but decoding them usually requires copying and pasting sensitive access tokens into third-party websites. Parsy changes this by providing a secure, local JWT Decoder Chrome Extension directly in your browser.
Simply navigate to a raw JWT or drop a file containing one, and Parsy instantly separates the token into its Header and Payload components. It automatically translates Unix timestamps into human-readable dates and visually highlights whether the token is still valid or has expired.
Zero Data Leakage
Never paste an active JWT into a public website again. Parsy decodes tokens entirely offline. It's the most secure way to inspect claims, scopes, and expiration times during development or debugging.