// w-logic free tools

JWT Decoder & Verifier

Decode any JSON Web Token. Inspect header, payload, expiry, and algorithm. Verify HMAC signatures client-side. Your token never leaves the browser.

// client-side only // token never transmitted // algo security check // exp / nbf validation // signature verification

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Paste a JWT above to begin analysis

Decode · Analyze · Understand what each claim means to an attacker and defender