HTML Plug-ins

The purpose of a plug-in, is to extend the functionality of the HTML browser.

HTML Helpers (Plug-ins)

Helper applications are computer programs that extend the standard functionality of a web browser.

Helper applications are also called plug-ins.

Examples of well-known plug-ins are Java applets.

Plug-ins can be added to web pages with the <object> tag or the <embed> tag. 

Plug-ins can be used for many purposes: display maps, scan for viruses, verify your bank id, etc.

	To display video and audio: Use the <video> and <audio> tags.

The <object> Element

The <object> element is supported by all browsers.

The <object> element defines an embedded object within an HTML document.

It is used to embed plug-ins (like Java applets, PDF readers, Flash Players) in web pages.

The <object> element can also be used to include HTML in HTML:

Or images if you like:

The <embed> Element

The <embed> element is supported in all major browsers.

The <embed> element also defines an embedded object within an HTML document.

Web browsers have supported the <embed> element for a long time. However, it has not been a part of the HTML specification before HTML5. The element will validate in an HTML5 page, but not in an HTML 4 page.

	Note that the <embed> element does not have a closing tag. It can not contain alternative text.

The <embed> element can also be used to include HTML in HTML:

Or images if you like: