HelloScript: Advanced Online Code Editor & Splitter

⚡ Smart Online Tool

HelloScript: Online Code Editor

Free Online HTML, CSS & JavaScript Code Editor with Live Preview

HelloScript is a free online code editor where you can write HTML, CSS and JavaScript in your browser and see the result instantly in a live preview. You can work in three separate panels, or paste a single HTML file and use the Split button to break it into HTML, CSS and JS automatically. It is made for students, beginners and developers who want to test a snippet, practice front-end coding or build a small web page without installing any software.

Main Features of HelloScript

📌 Live preview: Every change appears instantly. Use the "Live" button to open your project in a full-size window.
📌 Split and merge: Work in separate HTML, CSS and JS panels, or keep everything in one file.
📌 Flexible layout: Place the preview on the right, on the left, or in a separate window.
📌 Auto-save in your browser: Your code is saved locally as you type, so you do not lose your work if you close the tab.
📌 Cloud sync with Gmail: Log in with Gmail (Firebase) to save projects in "Your Work" and open them on other devices.
📌 Editing tools: Undo/Redo, Beautify for clean code formatting, a Color Picker, and Search (Ctrl+F).

How to Use the HelloScript Online Code Editor

Write or paste your code: Type HTML, CSS and JS in their panels, or paste a full HTML file and click Split.
Check the live preview: The result updates as you type. Click Live for a full-size view.
Choose your layout: Use the Layer button to move the preview where you prefer.
Clean up and search: Use Beautify to format code, Ctrl+F to find text and the Color Picker to pick colors.
Save or export: Give your project a title and save it to "Your Work", or export it as an .html or .json file.

Who Can Use It?

HelloScript is useful for students learning front-end web development, developers who need a quick place to test or debug a snippet, and anyone building a simple landing page, form or small JavaScript project. Because it runs in the browser, it works on a laptop or a phone without any setup.

Frequently Asked Questions

Is HelloScript free to use?

Yes. You can write code, preview it and export your project for free.

Do I need to create an account?

No. You can start coding right away. Logging in with Gmail is only needed if you want to sync your projects across devices.

Will my code be lost if I close the browser?

Auto-save keeps your code in your browser's local storage, so it is normally still there when you return. It can be lost if you clear your browser data, so export or save important projects.

Can I edit HTML, CSS and JavaScript in one place?

Yes. Use the three separate panels, or paste one combined HTML file and use the Split button to separate it.

How do I download my project?

Export it as an .html file to open in any browser, or as a .json file to keep as a backup.

Related Tools

If you work with images or text inside your CSS or JavaScript, try our Base64 Encode / Decode Tool to convert text and files to Base64 and back.

Prefer a workspace that saves your code in the browser without any login? Open the Split Code Editor with auto-save.

Just need to break one finished page into separate files? Use our Split HTML CSS JS Online tool.