Question 1

Can I include CSS and JavaScript?

Accepted Answer

Yes. Add <style> blocks for CSS and <script> blocks for JavaScript directly inside your HTML.

Question 2

Can I load external resources like CDN libraries?

Accepted Answer

Yes. External stylesheets and scripts referenced by URL are fetched and rendered normally.

Question 3

Is code sent to a server?

Accepted Answer

No. Your HTML is rendered in a sandboxed <iframe> inside your browser; nothing is uploaded.

Question 4

Can I test responsive layouts?

Accepted Answer

Yes. Resize the browser window and the preview reflects the change without needing to re-run.

HTML Playground

Write, test, and run self-contained HTML templates directly in your browser. Design layouts, embed CSS styles, and handle JavaScript interactions in a dual-pane live preview workspace.