Compare software

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