My rating
10/10
Pricing
Free
Category
Learning Platforms
Last reviewed
9 Jun 2026
What it is
MDN Web Docs by Mozilla is the definitive reference for web standards — HTML elements, CSS properties, JavaScript APIs and browser compatibility. When you need accurate, vendor-neutral information about how the web actually works, MDN is it.
Learning Reference JavaScript CSS
Why I use it
I trust MDN over random blog posts for anything about the platform — its browser-compat tables alone have settled many 'will this work?' questions.
Alternatives I'd consider
Setting this up for your project?
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