JWT Encoder / Generator

Edit header and payload JSON, provide a secret, and create a signed JWT for local testing. Generate HS256-signed JWT tokens from header, payload, and secret.

Introduction

JWT Encoder / Generator is a free, browser-based utility in our Crypto & Security Tools collection. Edit header and payload JSON, provide a secret, and create a signed JWT for local testing. JWT Encoder generates HS256 tokens in the browser for development and debugging. Pair with the JWT Decoder to inspect claims. Everything runs locally in your browser — inputs stay on your device, with no account or upload required. Highlights include hs256 signing.

Features

HS256 signing
Editable header/payload
Secret input
Copy token

How to use

1
Edit header and payload.
2
Enter a secret.
3
Copy the JWT.

Example

Demo token

Input

HS256 secret

Output

header.payload.signature

Benefits

Run JWT Encoder entirely in the browser with no signup or installation.
Keep sensitive sample data private — processing never leaves your device.
HS256 signing
Editable header/payload
Secret input
Pair it with JWT Decoder and Base64 when your workflow needs adjacent utilities.

FAQs

This tool currently signs with HS256 only.

No - signing is local. Still avoid production secrets on shared PCs.

Use JWT Decoder to inspect; verification against a secret is not included.

Yes. JWT Encoder on EverydayDevTools is free, with no account, watermarks, or usage caps for normal interactive use.

No. JWT Encoder runs in your browser. Your input is processed locally and is not sent to EverydayDevTools servers.

Edit header and payload JSON, provide a secret, and create a signed JWT for local testing. It fits everyday crypto & security tools tasks when you want a fast local utility instead of installing a CLI or opening a heavy IDE feature.

Core capabilities include: HS256 signing; Editable header/payload; Secret input; Copy token.

Developers often pair JWT Encoder with JWT Decoder, Base64, Hash Generator. Open Related tools on this page for quick links.