JWT generator

Create a signed JWT from JSON claims and a development secret.

On your device · No account

Privacy details

JWT generator processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

Copy link includes the inputs you choose to share in the address. Anyone with that link can reopen them. Files and generated results are excluded. Password and key tools share settings only.

Claims as JSON

More options

Development secret (UTF-8 text)

Your result

Reset reloads the tool with its starting values and releases open files and device controls. Saved drafts stay on this device until you delete them.

Links include your inputs and settings. Anyone with the link can see them, so leave out private text. Files and generated results are left out; random draws run again.

Keyboard shortcuts

Updated 2026-09-19

Using JWT generator

JWT generator supports HS256 only and re-verifies the generated signature before showing it. Claims are encoded as UTF-8 JSON with URL-safe Base64.

Next: HMAC generator

A worked example

The example payload contains a subject and a reader role. The resulting token has a header, payload and signature separated by dots.

Before you use the result

For development fixtures. Claims are not encrypted or checked for authorization, expiration or issuer policy. Use your application’s authentication library for production issuance and never paste a production signing secret here.

Cite this page

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ToolOctopus. “JWT generator.” Updated 2026-09-19. https://tooloctopus.com/jwt-generator.

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