YouTube High Definition is a powerful tool that will let you automatically play all YouTube videos in HD (High Definition), turn off annotations, change video player size, auto stop videos, auto mute videos, control embedded videos and much more.
Enlarge thumbnails, and show images/videos from links with a mouse hover.
Google Reverse Image Search The only add-on in this category capable of searching local files from the computer
Capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and text, blur sensitive info, one-click upload to share. And more!
Tons of features to improve your user experience on YouTube™.
Stops video autoplay and shows the preview thumbnail.
Reverse image search using various search engines, such as Google, Bing, Yandex, Baidu and TinEye.
Open and download links in IDM (Internet Download Manager) easily
Experience a beautiful image from Google Earth every time you open a new tab.
The YouTube Mp3 Downloader Add-on includes a Button on any YouTube Page and allows you to convert the YouTube Video to a Mp3 with just one click. Compatible with new Firefox Quantum 57
Allows user to block gif images on a web page.