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utility / Auth

JWT Decoder

Decode and inspect JWT tokens — header, payload, signature, expiry.

Runs locally
LOCAL WORKBENCH
Input stays in this browser

JWT Inspector

Paste an encoded JSON Web Token on the left. The tool will parse the token headers and payload claims instantly in your browser.

Continue the thread

Related utilities

01
JWT GeneratorBuild and sign JWT tokens with custom claims, headers, and algorithms.
→02
Base64 DecoderDecode Base64 strings back to text.
→03
JSON Formatter & ValidatorFormat, validate, minify, and tree-view JSON with syntax highlighting.
→

Field notes

Before you use it

Is my JWT token stored or transmitted?+

No. All decoding happens in your browser. Your token never leaves your device.

What JWT algorithms are supported?+

All standard algorithms including HS256, HS384, HS512, RS256, RS384, RS512, ES256, ES384, ES512, and PS256.