JWT

Lesson in the Backend Developer Roadmap · Stage 7: Learn about APIs

Last updated 14 September 2026

What is JWT?

JWT (JSON Web Token) securely transmits information as JSON objects with three parts: header (token type/algorithm), payload (claims/data), and signature (integrity verification). Used for authentication and authorization in web/mobile apps. Compact, self-contained, and HTTP header-friendly.

Study this in the interactive course See the whole Backend roadmap

Free resources to learn JWT

Official docsjwt.io Website
ArticleWhat is JWT?
ArticleJWT Security Best Practices
VideoNode.js JWT Authentication Tutorial

JWT: common questions

Can I learn JWT in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain JWT in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this JWT tutorial for beginners?

It is lesson 42 of 155 in the free Backend roadmap, in stage 7, Learn about APIs. If you are new to Backend, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.