Plugin - MDN Web Docs Glossary: Definitions of Web-related terms | MDN

A browser plugin is a software component that users can install to handle content that the browser can't support natively. Browser plugins are usually written using the NPAPI (Netscape Plugin Application Programming Interface) architecture. The most well-known and widely used plugin was the now outdated Adobe Flash player, which enabled browsers to run Adobe Flash content. As browsers have become

[ABA]

Firefoxのプラグインロードマップ“In early 2020, Flash support will be completely removed from consumer versions of Firefox.”

[izariuo440]

flash hint?

[nsta]

Firefox/Operaのプラグイン開発方法？