HTMLPlay

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The Premier Online HTML Viewer & Editor for Modern Frontend Developers

Welcome to HTMLPlay, the fast, modern, and developer-friendly online code playground designed to make frontend prototyping frictionless. Whether you are debugging a snippet of code, drafting standard layouts, or learning HTML/CSS/JavaScript, this live web inspector compiles your updates on the fly.

Engineered without heavy frameworks, HTMLPlay loads instantly, saving local configurations to prevent data loss. It is the perfect tool for designers testing styles, students starting out with code, or professional software engineers who need an isolated, zero-overhead environment to mock up interfaces.

Core Playground Capabilities

Real-Time Instant Preview: Run HTML, CSS, and JS simultaneously and inspect execution side-by-side.
Flexible Templates: Boot up presets ranging from semantic HTML5 elements to advanced CSS glassmorphism styles or Tailwind CSS implementations.
Base64 URL Sharer: Bundle your complete workspace state directly into a shareable link to send code to peers without database storage overhead.
Responsive Viewports: Emulate desktop, tablet, and mobile displays to test responsive layouts with single-click selectors.
Downloadable Source Code: Package your work as a single standalone HTML document ready for server upload.

Frequently Asked Questions (FAQ)

How does the online HTML viewer render code?

HTMLPlay uses an HTML5 iframe container. When you click "Run" (or with auto-refresh), the tool builds a complete inline document containing your HTML structural blocks, links your styles, and executes your scripts securely. The frame runs in a sandboxed container to maintain sandbox isolation and prevent workspace cross-contamination.

How can I share code snippets using HTMLPlay?

Simply click the "Share" button at the top bar. The tool automatically takes your current HTML, CSS, and JS editor inputs, encodes them into a compressed Base64 string, and appends it as a hash parameter in your URL. Copying this URL allows anyone to reload your exact environment configuration immediately.

Can I import external CDNs like Tailwind CSS or Google Fonts?

Absolutely. You can import any stylesheet or script library using standard tags (e.g. <link href="..." rel="stylesheet"> or <script src="..."></script>) directly in the HTML tab. We also provide a preconfigured Tailwind CSS template in the dropdown selector for immediate utility.

Is my work saved if I refresh the page?

Yes. The editor leverages LocalStorage to save your current working directories automatically. When you return or reload, your code tabs restore to their last state. If you want to start fresh, you can use the "Clear" button to wipe the local workspace cache.

Editor Settings

Font Size

Auto-Refresh Preview

Tab Space Count