CodePen
Developer Tools
CodePen is the best-known social development environment for front-end code — build demos live in the browser and explore millions of community 'pens'.
How to install it as an app
- Open codepen.io in Chrome or Edge.
- Click the install icon in the address bar (or menu → “Install app”).
- Open the app in Chrome on Android.
- Tap the ⋮ menu → “Add to Home screen” or “Install app”.
- Open the app in Safari on iOS.
- Tap the Share button → “Add to Home Screen”.
What the community says