What does this tool support?

HTML source. The browser repairs malformed HTML. Preview removes active markup, styles and external images; it is not a full rendering comparison.

Where is my input processed?

Tool calculations and conversions run locally in your browser. Existing analytics and advertising requests are separate from input processing.

Format browser-normalized HTML and compare a safe basic preview.

Formats browser-repaired HTML. Safe preview omits styles, active markup and external images.

Source HTML

Formatted HTML

Indentation:

Developer Tools Local processing

Format browser-normalized HTML and compare a safe basic preview.

HTML source. Use Try example where available to see the expected shape.

Select the relevant mode or settings. Automatic tools update as you type; other tools use the labeled primary action.

Check the result against your input, then use the available copy or download action. Edits clear or recompute the result.

Inputs are processed in your browser. Analytics and advertising can make separate network requests.

What does this tool support?: HTML source. The browser repairs malformed HTML. Preview removes active markup, styles and external images; it is not a full rendering comparison.
Where is my input processed?: Tool calculations and conversions run locally in your browser. Existing analytics and advertising requests are separate from input processing.