What is the difference between add-ons and extensions for web browsers?
Answers
Plugins are external pieces of software that work in tandem with certain programs to offer additional function. Eg, flash player is a plugin because flash is not a program installed in your browser; it is a bit of software installed separate;y which then works with the browser to render flash content. Similarly many media players have plugins which work with the browser to support certain file formats such that they can be played in the browser. So in your question, watching a youtube flash video would require a plugin.
Add-ons and extensions in Firefox are the same thing as far as I know. Addons are small pieces of software installed to work WITHIN the browser to allow it to perform certain additional functionalities and features not already available in the vanilla browser (pure browser installed fresh off the exe). In your question, an addon would be a small icon next to the address bar which shows the page rank of the page you're looking at or it could be something that displays the page rank within the web page itself.
Plug-ins for browsers are a different form of a module. The primary distinction is that extensions are typically only source code, but plug-ins are invariably executables (i.e. object code). Most browsers have deprecated plug-ins as of 2021, however, extensions are still commonly used.
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