Plug-ins are computer programs that extend the standard functionality of the browser.
Helper applications are computer programs that extend the standard functionality of a web browser. Helper applications are also called plug-ins. ... Plug-ins can be used for many purposes: display maps, scan for viruses, verify your bank id, etc
Plug-ins were designed to be used for many different purposes:
- To run Java applets
- To display Flash movies
- To display map
- To scan for viruses
- To verify a bank id
It was designed to embed plug-ins (like Java applets, PDF readers, and Flash Players) in web pages, but can also be used to include HTML in HTML:
Web browsers have supported the
<embed> element for a long time. However, it has not been a part of the HTML specification before HTML5.