Greatly enhances the YouTube experience with ad blocking, volume control through the mouse wheel, pausing videos that are opened in a background tab until you actually switch to that tab, and pinning the video in a corner of the page so you can scroll through the description and comments without losing sight of it.
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Pros
Pro Pins the video to a corner of the screen if you scroll down
With this feature you can read the entire page without ever losing sight of the video.
Pro Control the volume with the mouse wheel anytime the cursor is over the player
This is especially handy in videos where there's a lot of dynamic in volume levels, unlike the slider at the bottom you can raise or lower it almost before you're finished forming the thought to do so. It also allows you to set a default start volume for all videos instead of the usual 100%.
Pro Specify your preferred resolutions
Ever had a network-heavy process running while watching YouTube and had the site start loading videos at a grainy resolution instead of taking an extra few seconds to buffer adequately at a higher one? Not anymore with this extension! You can set up to four resolutions in order of preference and it will ensure that if any are available for that video it will use them rather than adapt.