Home Web & Dev

That one website that lets you try out HTML, CSS and JavaScript

Why it's the pick

CodePen gives you HTML, CSS and JavaScript boxes with a live preview that updates as you type, plus a huge library of public examples to learn from. You can start coding without an account; a free account lets you save and share, and Pro adds private work.

Know a better one? Tell us Made CodePen? Get the badge

Also good

JSFiddle jsfiddle.net Quick HTML, CSS and JS playground with React and Tailwind Free tierSignup optional Link checked Oct 9

You might also need

That one website that tidies up messy or squashed code so you can read it Beautifier.io beautifier.io FreeNo signup That one website that tells you which email apps support the HTML and CSS you want to use Can I Email caniemail.com FreeNo signup That one website that has thousands of free buttons, loaders and cards you can copy and paste Uiverse uiverse.io FreeSignup optional That one website that lets you try thousands of new AI models for free Hugging Face Spaces huggingface.co Free tierSignup optional That one website that tells you which browsers support a feature Can I Use caniuse.com FreeNo signup That one website that puts the documentation for every language and framework in one fast search box DevDocs devdocs.io FreeNo signup

Everything in Web & Dev