NexTool

JWT Decoder

Paste a JWT token and instantly decode the header, payload, and signature. Check expiration, algorithm, and claims without any server-side processing.

How to Use JWT Decoder

  1. 1Paste your JWT token into the input.
  2. 2View the decoded header with algorithm and type.
  3. 3Inspect the payload with all claims and expiration check.

Frequently Asked Questions

Is it safe to paste my JWT here?▾

Yes! Decoding happens in your browser. Your token is never sent to any server.

Can it verify the signature?▾

It decodes and displays header/payload/signature info. Full verification requires the signing key.

What JWT formats are supported?▾

Standard JWTs with three Base64-encoded parts using any algorithm (HS256, RS256, ES256, etc.).

About JWT Decoder

Paste a JWT token and instantly decode the header, payload, and signature. Check expiration, algorithm, and claims without any server-side processing.

NexTool's JWT Decoder is completely free to use with no sign-up required. Your data is processed directly in your browser and never sent to our servers, ensuring complete privacy and instant results.

Related Tools

JSON Formatter
Format, validate, and beautify JSON data
Base64 Encoder/Decoder
Encode and decode Base64 strings
Regex Tester
Test and debug regular expressions in real-time
URL Encoder/Decoder
Encode and decode URL strings
Cron Expression Builder
Build and explain cron expressions visually
HTML Entity Encoder/Decoder
Encode and decode HTML entities

Stay Updated

Get notified about new tools, features, and exclusive deals. No spam, ever.