How is the HTML rendered?

The HTML is injected into an iframe using the srcdoc attribute, which isolates the preview from the parent page and provides a clean rendering environment.

Is the HTML Viewer free to use?

Yes, the HTML Viewer on Potential Daily is completely free with no sign-up required.

💻 Developer Tools

HTML Viewer & Preview

Q: How do I view HTML code online?

Paste your HTML code into the editor above and click 'Run / Preview'. The rendered result appears instantly in the iframe on the right.

Q: Does this tool support CSS and JavaScript?

Yes. Any inline and tags inside your HTML are rendered along with the markup, so full pages with embedded CSS and JavaScript work correctly.

Paste HTML code and instantly preview the rendered result in a live iframe — test responsive designs at multiple viewport widths.

Paste HTML

Preview

How the HTML Viewer works

Paste any HTML snippet or full page into the editor and click Run / Preview. The HTML is rendered in a sandboxed iframe using the srcdoc attribute, so embedded <style> and <script> tags work normally. Switch between Mobile, Tablet, Desktop, or Full viewport widths to test responsive layouts.

Frequently Asked Questions

How do I view HTML code online?

Paste your HTML code into the editor above and click "Run / Preview". The rendered result appears instantly in the iframe on the right.

Can I test responsive designs with different screen sizes?

Yes. Use the viewport selector to switch between mobile (375px), tablet (768px), desktop (1024px), or full width. The preview iframe resizes automatically.

Does this tool support CSS and JavaScript?

Yes. Any inline