--- title: 433: CodePen 2.0 is Backward Compatible with Any Classic... description: CodePen 2.0's new editor is designed to be backward compatible with all existing Classic Pens and Projects. All Projects have already been converted to 2.0... canonical: https://daily.dev/posts/433-codepen-2-0-is-backward-compatible-with-any-classic-pen-or-project-ynr9l2uu7 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: 433: CodePen 2.0 is Backward Compatible with Any Classic Pen or Project | daily.dev og:description: CodePen 2.0's new editor is designed to be backward compatible with all existing Classic Pens and Projects. All Projects have already been converted to 2.0... og:url: https://daily.dev/posts/433-codepen-2-0-is-backward-compatible-with-any-classic-pen-or-project-ynr9l2uu7 og:image: https://api.daily.dev/og/posts/ynr9l2uU7.png og:image:alt: 433: CodePen 2.0 is Backward Compatible with Any Classic Pen or Project og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # 433: CodePen 2.0 is Backward Compatible with Any Classic Pen or Project **[CodePen](https://daily.dev/sources/codepen)** · 2 min read · 2 upvotes · 0 comments ## Summary CodePen 2.0's new editor is designed to be backward compatible with all existing Classic Pens and Projects. All Projects have already been converted to 2.0 Pens, effectively eliminating the Projects feature. Classic Pens can optionally be converted to 2.0 via a button in the Save menu, though forced migration isn't planned imminently. The engineering goal was to consolidate multiple editors into one while ensuring full feature parity and future extensibility. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What happened to CodePen Projects after the 2.0 editor launched? CodePen Projects no longer exists as a separate feature; at the time of the 2.0 editor's launch, all Projects were automatically converted into 2.0 Pens. Classic Pens were not force-converted, and users can choose to convert them later via a button under the Save menu, though CodePen has no immediate plan to convert all Classic Pens. _Following platform migrations like this helps developers plan before their own saved projects change format on daily.dev._ ### Is CodePen 2.0 backward compatible with Classic Pens? Yes, the CodePen 2.0 editor was built to support anything an existing Classic Pen or Project could do, while remaining extensible for future features. Conversion from Classic Pens to 2.0 is optional and triggered manually via the Save menu, rather than being forced on users at launch. _Developers weighing whether to migrate saved work can track compatibility details like this on daily.dev._ ## Similar posts on daily.dev - [431: Versions are Deeply Integrated into CodePen](https://daily.dev/posts/431-versions-are-deeply-integrated-into-codepen-4bpxc48zf) · CodePen · 0 upvotes · 0 comments - [415: Babel Choices](https://daily.dev/posts/415-babel-choices-mh34769gp) · CodePen · 0 upvotes · 0 comments - [CodePen 2.0](https://daily.dev/posts/codepen-2-0-j2meaiqv9) · Hacker News · 3 upvotes · 0 comments --- Tags: [#webdev](https://daily.dev/tags/webdev) [View this post on daily.dev](https://daily.dev/posts/433-codepen-2-0-is-backward-compatible-with-any-classic-pen-or-project-ynr9l2uu7) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"433: CodePen 2.0 is Backward Compatible with Any Classic Pen or Project","url":"https://daily.dev/posts/433-codepen-2-0-is-backward-compatible-with-any-classic-pen-or-project-ynr9l2uu7","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/433-codepen-2-0-is-backward-compatible-with-any-classic-pen-or-project-ynr9l2uu7"},"datePublished":"2026-07-08T19:10:08.553Z","dateModified":"2026-09-13T18:49:51.801Z","description":"CodePen 2.0's new editor is designed to be backward compatible with all existing Classic Pens and Projects. 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Classic Pens were not force-converted, and users can choose to convert them later via a button under the Save menu, though CodePen has no immediate plan to convert all Classic Pens. Following platform migrations like this helps developers plan before their own saved projects change format on daily.dev."}},{"@type":"Question","name":"Is CodePen 2.0 backward compatible with Classic Pens?","acceptedAnswer":{"@type":"Answer","text":"Yes, the CodePen 2.0 editor was built to support anything an existing Classic Pen or Project could do, while remaining extensible for future features. Conversion from Classic Pens to 2.0 is optional and triggered manually via the Save menu, rather than being forced on users at launch. Developers weighing whether to migrate saved work can track compatibility details like this on daily.dev."}}]} ```