LazyLoadify is useful when you are surfing the web and want to save bandwidth. It will force the browser to lazily load image, frame, video and audio resources. These resources will only be loaded if they are displayed.
gildas-lormeau/LazyLoadify
Web Extension to force the lazy loading of non-displayed resources (i.e. image, frame, video and audio contents)
JavaScriptAGPL-3.0