JSFiddle

JSFiddle is a web-based code playground. You write HTML, CSS and JavaScript in the browser, see the result right away, and then save and share the snippet.

Each fiddle has panels for HTML, CSS and JavaScript, plus a result pane and a console. You can start from a boilerplate, including templates for React, Tailwind, jQuery and TypeScript. Saved fiddles get their own link, so you can share a test case or an example with someone else. The site also includes a library of CDN resources for common scripts, which saves time when you need a library quickly.

• Separate HTML, CSS and JavaScript panels
• Live result pane with a console
• Starter templates for React, Tailwind and more
• Shareable links for each fiddle
• CDN library for common scripts

Frontend developers who want to test an idea, reproduce a bug or demo a snippet. Students who are learning web basics can also use it to see code run immediately.

The core editor is available to use in the browser. Pro features, such as certain collections and fiddle pages, are offered as a paid plan. The site also lists separate small apps, such as a colour palette generator and a Flexbox generator, which you can open without installing anything.