# JWT Decoder

> Decode JSON Web Tokens to read header, payload, and expiry claims without sending the token anywhere.

Decode JWTs free and privately: inspect header, payload, and expiry claims with human-readable dates. Your token never leaves the browser.

- **Canonical:** https://www.ailovekit.com/dev/jwt-decoder/
- **Category:** Developer Tools
- **Processing:** Runs entirely in your browser. Files are never uploaded to AiLoveKit servers.

## Read a JWT Without Leaking It

Debugging auth flows means staring at tokens. AiLoveKit's **JWT decoder** splits the three parts, pretty-prints the header and payload, and translates `exp`, `iat`, and `nbf` claims into readable dates with expired/valid status - all in your browser, because pasting tokens into random websites is how accounts get compromised.

## What You See

- **Header** - algorithm and token type.

- **Payload** - every claim, formatted.

- **Time claims** - issued, not-before, and expiry in local time.

## Frequently Asked Questions

**Does this verify the signature?**

No - signature verification needs the secret or public key, which would mean uploading material you should keep. This tool decodes and inspects only.

**Is decoding a JWT safe?**

Decoding only reads the visible header and payload (they are base64url, not encrypted). Still, this tool does it locally, so nothing travels.

**What claims are highlighted?**

exp, iat, and nbf are converted to human-readable dates with live expired/valid status.

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Source: https://www.ailovekit.com/dev/jwt-decoder/
Part of AiLoveKit: https://www.ailovekit.com/
Machine-readable index: https://www.ailovekit.com/llms.txt