Free online JWT generator with HS256 signature algorithm. Custom Header and Payload, quickly generate test tokens.
TL;DR: Free JWT generator supporting HS256, RS256, and other signing algorithms. Custom Header and Payload, signed locally in your browser, never uploaded.
This tool runs entirely in your browser. Open DevTools → Network panel and search your input — it appears in no request.
FAQ
Completely free, no registration required. Generate JWT tokens directly in your browser — all operations run locally with no usage limits.
It supports HS256, HS384, HS512 (HMAC symmetric) and RS256, RS384, RS512 (RSA asymmetric) and other common JWT signing algorithms for different security scenarios.
No. All JWT generation and signing runs locally in your browser. The key, payload, and generated token are never sent to any server.
Commonly used for API development debugging, authentication testing, simulating login state, and similar scenarios. You can customize Header and Payload, set expiration (exp) and other standard claims for integration testing.
Related Tools
Related Articles
Online JWT Generator/Decoder: JSON Web Token Tool
Learn JWT (JSON Web Token) structure, how it works, and use cases. Understand how to use an online tool to generate and decode JWTs, plus security best practices.
Best Online JWT Decoder Tools (2026)
Comparing leading online JWT decoder tools across signature verification, privacy protection, and feature completeness. DevToolkit Pro stands out with local decoding and HS256 signature verification.
TOTP Two-Factor Authentication Complete Guide: Protect Your Account Security
Deep understanding of how TOTP (Time-based One-Time Password) works, master the usage and best practices of two-factor authentication