JWT Decoder — Inspect Token Header & Payload Free

New

Decode JSON Web Tokens and inspect header & payload

Paste a JWT and instantly view its decoded header, payload, and signature in readable JSON — useful for debugging authentication tokens. Nothing leaves your browser.

{
  "alg": "HS256",
  "typ": "JWT"
}
{
  "sub": "1234567890",
  "name": "John Doe",
  "iat": 1516239022
}
SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c

Decoding happens entirely in your browser — your token is never sent to a server. Note: this tool decodes JWTs, it does not verify signatures.

You Might Also Like

Base64 Encoder/Decoder

Encode text to Base64 or decode Base64 strings instantly

Try it

JSON Formatter

Format, validate, and minify JSON

Try it

UUID & Hash Generator

Generate UUIDs and MD5/SHA hashes instantly

Try it

📖 Learn More

UUID and Hash Generator Guide: MD5, SHA-256 & UUID v4 Explained

Need a unique ID or a quick checksum? Here's what UUIDs and hashes actually do — and how to generate both instantly, for free.

6 min read
Read article