Hackathon Projects | jwts.dev: decode and learn about JWTs in one place

We’re excited to launch jwts.dev, a site that lets you instantly see what’s hiding inside your JWTs—no shell scripts, no copy-paste decoder workarounds. It simplifies the process of decoding JSON Web Tokens (JWTs) and provides a comprehensive understanding of how they work.

Existing tools just focus on showing tokens; we wanted a tool that focused on teaching and troubleshooting them. So we built one during our hackathon. Try it out yourself, where you can paste any token, and this tool will:

1. Auto-format and separate the header and payload so you can spot claims at a glance.

2. Highlight the relevant sections of your unencoded JWT, or tell you if it is broken/invalid.

3. Decode the JWT locally — your token never leaves your browser, meaning nothing is sent over the internet.

   

   Read the full story in our dedicated blog post!

   Give it a try today for free, with no signup at https://jwts.dev/ and let us know what you think!

   Check back in tomorrow for another hackathon project.