Compare software

JSFiddle vs CodePen: catalog facts
JSFiddle	CodePen
Freemium Free with ads; a PRO subscription removes ads and adds private fiddles and collections.	Freemium Free to use, with paid plans for additional features.
Web	Web
Nothing to install; runs in the browser Shareable links for snippets and demos	Live preview of HTML, CSS and JavaScript as you type Nothing to install
Ads in the editor on the free plan Private fiddles and the console require PRO	Needs an internet connection Suited to small demos rather than full projects
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.