100% Client-Side

JWT Toolbox

Generate, decode, verify, and debug JSON Web Tokens — entirely in your browser.

Start GeneratingExplore Docs

Generate Tokens

Create signed JWTs with custom payloads, headers, and your choice of algorithm.

Decode & Verify

Paste any JWT to inspect its contents and verify signatures with a secret or public key.

Debug & Inspect

Live split-view debugging with color-coded header, payload, and signature segments.

Key Generation

Generate RSA and ECDSA key pairs directly in your browser using Web Crypto API.

Code Snippets

Ready-to-use code examples in 10 programming languages for your projects.

100% Client-Side

All cryptographic operations happen in your browser. Nothing is sent to any server.