JWT Decoder
Paste a JWT token and instantly decode the header, payload, and signature. Check expiration, algorithm, and claims without any server-side processing.
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More daily tool uses
500 tool uses per day on Pro
Monthly AI allowance
50 AI uses per month across supported AI tools
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How to Use JWT Decoder
- 1Paste your JWT token into the input.
- 2View the decoded header with algorithm and type.
- 3Inspect the payload with all claims and expiration check.
Frequently Asked Questions
Local calculations run in your browser. AI features, accounts, saved reports and external data requests use server services. Check the tool description and privacy policy for the relevant processing and storage.
It decodes and displays header/payload/signature info. Full verification requires the signing key.
Standard JWTs with three Base64-encoded parts using any algorithm (HS256, RS256, ES256, etc.).
The JWT Decoder is an online tool that lets you decode and inspect json web tokens. It is part of NexTool's collection of free tools designed to help you work faster and more efficiently.
Using the JWT Decoder is simple: visit the tool page, enter your data or input into the provided fields, and get instant results. Follow the controls on the page. Some functions require sign-in or a paid plan; see Pricing for limits.
The Free plan includes 10 tool uses per day. Some features require an account or a paid plan. Check the controls on the tool page and Pricing for the applicable limits.
The JWT Decoder returns results based on the inputs and the tool methodology. Check assumptions, units and source dates. Treat projections as estimates. For critical decisions, always consult a qualified professional.
The JWT Decoder is designed to be language-agnostic where applicable. It processes input directly in your browser, so there are no compatibility issues. Check the tool description for specific format support.
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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.
Use the controls shown by JWT Decoder to generate and review your result. Available features and usage limits depend on your plan. Check the tool's instructions and privacy information before submitting data.
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Add JWT Decoder to your website. Paste the code below into your HTML. The iframe auto-resizes to fit the tool content.
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