HTML Editing, Preview and Running FAQ

Use the visual editor to change page text directly, or switch to source mode to edit the complete HTML including embedded styles.

Yes. HTML and CSS are combined in the preview, which refreshes automatically when you edit the content or styles.

No. The editor runs in a modern browser and is intended for quick HTML editing and previewing.

Yes. Use Download HTML to save the current HTML and CSS as an index.html file.

Yes. Import complete HTML source with head, style, and body. The editor keeps the document structure and shows the result in the preview.

Import a file or paste source code and the preview updates automatically. Click New tab preview to run the current HTML in a separate browser tab.

Common .html, .htm, and .txt files are supported. Their content is loaded into the source editor, and you can drag a file in or choose it from your device.

Yes. Select an element in edit mode and use the style panel to change text color, background, font size, alignment, padding, and margin.

Your content and editor layout are saved in this browser’s local storage, so you can continue after refreshing or reopening the page.

Click Undo to restore the latest edit. Use Reset styles to remove inline styles from the selected element; resetting a parent asks for confirmation first.

Check that resource URLs are complete and reachable, and that relative paths match the file location. Cross-origin restrictions or login-protected assets may not load in a browser preview.

Yes. The preview offers desktop, tablet, and mobile sizes, so you can check layout and text at different screen widths.