What it is
MDN Web Docs documents HTML, CSS, JavaScript and web APIs with guides and examples. It is maintained by Mozilla with contributions from the web community.
Who it's for: Web developers and learners
Key features
- Reference for HTML, CSS and JavaScript
- Guides and tutorials
- Browser compatibility tables
Free access & limitations
Documentation is free to read and is open source, so it can be reused.
Registration
Not required
Pros
- Authoritative and up to date
- Includes browser compatibility data
Cons
- Advanced topics assume prior knowledge
Use cases
Looking up web APIsLearning front-end basics
Related websites
Free plan available
Code hosting and collaboration.
Free plan available
DevOps platform with Git hosting and CI.
Completely free
Question and answer site for programmers.