ImageTweak是一個非常狹窄的針對性插件。因此，你不會看到它積極的任何地方，除了當前標簽頁或窗口時顯示圖像或視頻嵌入在網頁（更確切地說，它會激活，只有當當前活動文檔的URL資源的一個MIME - 類型的實例ImageDocument或VideoDocument）的Firefox呈現。

ImageTweak is a very narrowly targeted addon. As such, you will not see it active anywhere except when the current tab or window is displaying an image or video not embedded within a webpage (more precisely it will activate only when the URL of the currently active document points to a resource having a MIME-type that Firefox renders by instantiating an ImageDocument or VideoDocument).

官方網站：https://github.com/CAFxX/ImageTweak/wiki/ImageTweak-user-guide

相關搜索：網頁插件 視頻嵌入