Browser-based developer toolbox: JSON formatter, Base64, URL, JWT decoder, and timestamp converter. No install, nothing uploaded.
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Updated
Nov 10, 2026 - JavaScript
Browser-based developer toolbox: JSON formatter, Base64, URL, JWT decoder, and timestamp converter. No install, nothing uploaded.
A free, open-source, all-in-one developer toolbox — 25+ utilities available in a single progressive web app, with dark mode, search, and offline support.
Decode and inspect JWT tokens instantly. View header, payload, claims, and expiry status. Edit tokens and generate new ones.
JWT Decoder decodes JWT tokens to reveal header and payload information without performing signature verification. It handles JSON web token decode from any language over REST, so you can inspect claims and expiry without adding a JWT library.
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