A plug-in is embedded in the browser but does not normally have a visual interface, and is generally intended for handling specific types of content. Examples of plug-ins are Windows Media Player or the PDF document viewing program Adobe PDF Plug-In.
Usually, you need to install plug-ins when you visit a site that has a specific type of content (for example, a video). To display this content properly, you must install a plug-in.
The browser will inform you that an appropriate plug-in needs to be installed; you will see a notification in the upper part of the page. You will need to download the latest version of the plug-in from the developer's website and install it yourself.
You can manage installed plug-ins in browser settings.
In the lower part of the Settings page, click the Show advanced settings button.
In the Privacy section, click Content settings
In the window that opens, find the Plug-ins section and click Manage individual plug-ins.
The Plug-ins page opens, where all installed plug-ins are listed. To disable a plug-in, click the Disable link under its name.
You cannot delete an installed plug-in from the browser interface. You must use the standard features of your operating system for deleting an application.
Plug-ins are not updated automatically and can become outdated. The browser detects outdated plug-ins: if the plug-in is outdated, you will see a message about it in the address bar.