Features

Supports capabilities for including data similar to other scripting macros.
Supports find and replace for adjusting resulting output.
Allows the user to restrict the usage of Javascript in the HTML macro (based on the configuration of on Allow Javascript in the Configuration page). The Confluence page throws a rendering error if this parameter is not enabled, and Javascript is inserted while using the macro.

Other HTML macros

{html} and {html-include} macros shipped with Confluence. See the Confluence User Guide: http://confluence.atlassian.com/display/DOC:HTML Macro and http://confluence.atlassian.com/display/DOC:HTML Include Macro. These macros are disabled by default in Confluence, since it is a security exposure unless you only have trusted users on your site. The Confluence HTML macro must be disabled for the new HTML macro to be used.
HTML Tag - a safer alternative to the standard {html} macro but does not allow for arbitrary HTML to be included.

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Tip
By default, header content is excluded as it could interfere with Confluence page HTML. Use head=true to include anyway, provided it does not disturb the content.

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HTML from a file in the script folder in the Confluence home directory
No Format
{html:script=#example.html} {html}
HTML from an attachment
No Format
{html:script=^example.html} {html}

HTML put within {noformat} panel

No Format
{html:output=wiki\|noPanel=true} Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aliquam fermentum vestibulum est. Cras rhoncus. {html}

HTML from an URL

No Format
{html:script=#http://localhost/example.html} {html}

Use of CSS inline style sheet

No Format
{html} <P style="font-size: x-large; color: #8000"> Using inline style sheets - or is that inline styles? </p> {html}

Use of CSS external style sheet

No Format
{html} <LINK href="http://www.cssgarden.com/css/T22/keylime_0001.css" rel="stylesheet" title="default" type="text/css"></LINK> <H1>Absolute </H1> {html}

Info
Make sure that the style sheet is available on a the server and provide an absolute URL reference to this external style sheet resource.

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