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WorkUtilities

JWT Decoder β€” JSON Web Token Inspector

Decode, inspect, and verify JWT tokens entirely in your browser β€” color-coded like jwt.io with signature verification built in.

HeaderPayloadSignature

HEADER

algHS256
typJWT

PAYLOAD

βœ… Token Valid β€” expires in 3 days

Expires: July 21, 2026 at 6:33 AM

subSubjectdemo-user-123
nameWorkUtilities Demo
issIssuerworkutilities.com
iatIssued At1782023591 (June 21, 2026 at 6:33 AM)
expExpiration Time1784615591 (July 21, 2026 at 6:33 AM)

SIGNATURE

lqHZ-_lMyTV36yZ4p8u4-4DOwAnBv5PmcGzkmHXTIqU

Verify Signature (HS256)

⚠️ Add a secret or public key to verify the signature

πŸ”’ Verification is done in your browser β€” your secret never leaves this page

How It Works

01

Paste Token

Paste your JWT β€” header, payload, and signature are color-coded

02

Inspect Claims

Review decoded claims, expiry status, and claim labels

03

Verify

Add your secret or public key to verify the signature locally

Help Us Improve

Your feedback helps us build better tools.

About JWT Decoder

Our free JWT Decoder inspects JSON Web Tokens with jwt.io-style color-coded header, payload, and signature panels. See claims with expanded labels, expiry badges, and human-readable timestamps.

Verify HMAC, RSA, and ECDSA signatures client-side using the Web Crypto API β€” your secret or public key never leaves your browser.

Essential for developers debugging OAuth, API authentication, and session tokens during development and testing.

Read the full guide: How to decode a JWT token online

When Should You Use JWT Decoder?

API debugging

Inspect token claims when authentication fails.

Signature verification

Confirm a token is genuine with your secret or public key.

Expiry checks

See if a token is expired with clear valid/expired badges.

OAuth development

Verify issuer, audience, and scope claims in tokens.

Learning JWT

Understand JWT structure with labeled claims and a demo token.

Frequently Asked Questions