JWT Builder

Build and sign JSON Web Tokens online for free. Create JWTs with custom claims, headers, and signing algorithms with instant encoding.

JB
Coming SoonDeveloper Tools

The full version of JWT Builder is being built right now. We add new fully functional tools every week. In the meantime, you can use the basic workspace below.

About JWT Builder

Build and sign JSON Web Tokens online for free. Create JWTs with custom claims, headers, and signing algorithms with instant encoding.

This tool is completely free and runs 100% in your browser. Your data is never uploaded to any server — everything is processed locally on your device for maximum privacy and speed.

About JWT Builder

Build and sign JSON Web Tokens online for free. Create JWTs with custom claims, headers, and signing algorithms with instant encoding.

Features

  • 100% free with no sign-up required
  • Runs entirely in your browser for full privacy
  • No data stored, no files uploaded to servers
  • Works on desktop and mobile devices