JWT Decoder
Decode JSON Web Tokens and inspect claims
Nasıl çalışır
- 1Paste your JWT
Drop the token (header.payload.signature) into the input box.
- 2Inspect the header and payload
The three base64url segments are decoded and formatted as JSON.
- 3Check the claims
Standard claims like exp, iat, nbf are shown with human-readable dates and an expired/valid badge.
JWT Decoder Hakkında
Free online JWT decoder. Paste any JSON Web Token to decode the header, payload, and signature. See standard claims (iss, sub, exp, iat) formatted with human-readable timestamps and an expiry indicator. All decoding happens in your browser. 712 Tools üzerindeki JWT Decoder tamamen browser'ınızda native JavaScript API'lerle çalışır - hiçbir server verilerinizi görmez. Yani anında sonuç, tam privacy ve upload limiti yok.
İster bir debugging session olsun, ister hızlı bir sanity check ya da bir production incident'ı - bu tool istediğiniz kadar ücretsiz kullanılabilir. Watermark yok, kayıt yok, tool içinde reklam yok.
Sık sorulan sorular
Does it verify the signature?
No. This tool only decodes the token - verifying signatures requires the secret or public key, which should never be pasted into a public web tool.
Is my token uploaded?
Never. All base64url decoding happens locally in your browser. Nothing is stored, logged, or sent.
Is it safe to paste production tokens?
Because decoding happens locally, yes - no network request is made. Still, treat any browser tool with care and prefer a local CLI for the most sensitive tokens.
What algorithms are supported?
The header shows any 'alg' value. Decoding is algorithm-independent since it only parses the base64url segments.
Devamını oku
From curl to fetch, axios, and Python: the API integration workflow
Every API doc uses curl examples. Every codebase uses something else. Here's how to translate curl commands correctly - headers, auth, JSON bodies, and the flags that don't map cleanly.
JWT explained: what actually goes inside that token
Every login flow you touch these days involves JWTs, but 'JSON Web Token' hides a lot. Here's the three-part structure, the security pitfalls, and when not to use them.
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