JWT Generator
Generate test JWT tokens from header and payload JSON, with optional HS256 signing for local auth and fixture workflows.
AI-Readable Summary
Create unsigned or HS256-signed JWTs for local testing and auth debugging.
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyXzQyIiwicm9sZSI6ImFkbWluIn0.dVcTaNUI4_9vetp2_aWFmRnofNFeq52JB6MLqERB-Gs
What is this tool?
JWT Generator helps developers generate test JWT tokens with editable header, payload, and optional HS256 signing. It is especially useful for creating local test tokens, reproducing auth edge cases, building fixture payloads for demos.
How to use it
Example
{ "sub": "user_42", "role": "admin" }eyJhbGciOiJIUzI1NiJ9....Header and payload JSON are encoded into a test token, optionally signed with an HS256 secret.
Related Tools
Decode JWT tokens instantly, inspect header and payload claims, and see expiry details without sending data to a server.
Encode and decode Base64URL payloads for JWTs, signed URLs, and web-safe tokens without standard Base64 character issues.
Generate HMAC signatures from text and secrets using SHA-based algorithms for webhooks, APIs, and signed payloads.
Format, validate, and minify JSON with instant error hints. Built for API payloads, fixtures, and debugging malformed responses.
Frequently Asked Questions
JWT Generator helps developers generate test JWT tokens with editable header, payload, and optional HS256 signing. It is built for common workflows like creating local test tokens and reproducing auth edge cases.
Use it when you need a fast answer while debugging, building payloads, or validating output. Typical workflows include creating local test tokens, reproducing auth edge cases, building fixture payloads for demos.
Yes. The tool is designed for fast, lightweight workflows without sign-up or heavy UI. Most processing happens instantly in the browser.