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Frequently Asked Questions
What languages does this code compiler support?
You can write HTML, CSS, and JavaScript in three separate tabs. They’re combined and rendered together in the live output panel, exactly like a real webpage.
Does the preview update automatically?
Yes, the preview updates live as you type (with a short debounce). You can also click Run to force an immediate refresh.
Can I see console.log output?
Yes, the built-in Console panel below the editor captures console.log, console.warn, and console.error calls from your JavaScript, so you can debug without opening browser DevTools.
Is my code saved anywhere?
Your code autosaves to your browser’s local storage as you type, so it’s still there if you refresh the page. Nothing is ever sent to a server — everything runs locally in a sandboxed preview frame.
Can I download my code?
Yes, click the download icon in the toolbar to save your HTML, CSS, and JS as a single standalone .html file you can open in any browser or host anywhere.
Are there starter templates?
Yes, the Templates dropdown includes ready-made examples — a profile card, a to-do list, a flexbox layout, and a Fetch API demo — to help you get started or learn a technique quickly.