Speed up, slow down, advance and rewind any HTML5 video with quick shortcuts.
Removes all annoying Ads from YouTube
Grab and download media (image, audio, and video) resources by monitoring network (like FlashGot or Flash video downloader extensions)
Tons of features to improve your user experience on YouTube™.
Stops video autoplay and shows the preview thumbnail.
If you are the kind of person who likes to have total control over every aspect of your downloads, "Download Status Bar" is the add-on you are looking for.
Скачивание музыки с сервисов Яндекс.Музыка и Яндекс.Радио
Reverse image search using the most popular search engines, such as Google, Bing, Yandex, Baidu and TinEye.
An image downloader built with webextensions
Video & Flash Download Manager is a great download helper tool that lets you download and Flash videos (YouTube, Facebook, Dailymotion, Google Video,or just collect them in your video list without downloading them. Support FireFox 57+ Quantum.
Zoom images/videos on all your favorite websites (Facebook, Amazon, etc). Simply hover your mouse over the image to enlarge it.