Debugging JWT authentication usually means copying tokens between tabs and tools. I built a free,...
Debugging JWT authentication usually means copying tokens between tabs and tools. I built a free, browser-only JWT Creator & Signer — create, sign, and verify JWTs entirely in your browser using the Web Crypto API.
Live Tool
What it does
Create JWTs — edit header (alg, typ) and payload (any JSON)
Sign with HMAC — HS256, HS384, or HS512
Every time I needed to quickly decode a JWT, format some JSON, or generate a UUID, I ended up on some...
I was debugging an authentication issue at 11pm when I caught myself pasting a production JWT token...
Learn how to decode JWT tokens client-side. Understand header, payload, signature, and how to inspect tokens safely without…
Every developer has a set of small utilities they reach for daily — decoding a JWT, formatting JSON,...
If you've ever worked with auth, you've seen a JWT — a long string like eyJhbGci... split into three...
Every developer needs quick tools — JSON formatter, Base64 encoder, JWT decoder, regex tester, PDF...
