JWT Decoder

Paste a JWT token and inspect every part instantly. Great for debugging auth, role claims, and expiration.

Gizlilik: yerel olarak işlenir, asla yüklenmez.

Anında sonuçları görmek için aşağıdaki giriş alanına yapıştırın

在此粘贴 JWT Token

支持完整 Token 或带 Bearer 前缀的字符串,粘贴后自动解析。

Paste a JWT token and inspect every part instantly. Great for debugging auth, role claims, and expiration.

Hızlı başlangıç

  1. Paste token

    Bearer prefix is accepted and stripped automatically.

  2. Inspect header and payload

    Focus on alg, sub, aud, exp, and custom claims.

  3. Check expiry and signature

    The tool warns if token is expired, expiring soon, or missing signature.

What JWT is

JWT is a three-part token format commonly used for authentication.

The three parts are header, payload, and signature separated by dots.

How to debug auth issues

Check exp first, then verify aud and iss match backend expectations.

If signature is empty, the token is often truncated or malformed.

Örnekler

Sample token

Input

eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxMjMiLCJleHAiOjQ3MDI0NDQ4MDB9.signature

After decoding, you can inspect sub=123 and exp claim.

FAQ

Will my token be uploaded?

No. Decoding runs locally in your browser.

Why token is marked expired?

Because exp claim is earlier than current time. Check issuer timezone and expiration policy.

Does it support Bearer prefix?

Yes, it is automatically stripped.