What is a web browser plug-in?
A web browser plug-in is an additional module that adds features to a browser in order to support certain elements, such as support for sound, video, and 3D animation files. Plug-ins are helper applications which can be downloaded and installed, extending functionality to web browsers. For example, to access Flash content on many websites (A Flash Site), browsers require the Macromedia Flash or Shockwave plug-in; PDF files can be opened within the web browser if the Adobe Acrobat Reader plug-in is installed; Many online tutorials require a video player like Microsoft Media Player or RealPlayer. Note: When downloading and installing recommended plug-ins, you should only download plug-ins from software manufacturer sites.