Add speed buttons to any HTML5 <video> element. Comes with a loader for YouTube and Vimeo

Video Speed Adjustment for Bilibili, Youtube, Netflix

View tags on YouTube description pages.

Watch videos from video sharing websites with extra options.

Watch videos from video sharing websites without Flash Player.

Script adds a posibility to apply Wadsworth Constant to YouTube videos. Two buttons are added, one to apply and to auto-switch.

Save playlist videos in order to remember what video got removed

Used XDown YouTube

A simple script to enable in browser downloading of Youtube videos, no external scripts required.

Search videos in YouTube (from Yandex page).

A lightweight and non-intrusive userscript that control video playback and set the preferred player size and playback quality on YouTube.

YouTube image access | This script allows you to access the video images in different resolutions. | Sometimes there is video though it not be worth it to see them images that you like and you want to download it. | the solution is here, just install this script and links will appear in the description of the images. | Note: some occasions used in conjunction with other script does not display links to the first time, only you must reload the page and it will appear.

Hit 'Flag for Spam' to block users in YouTube chat

check https://bitbucket.org/braunbearded/youfaster/src/master/README.md

Redirects external YouTube search and watch requests to HookTube

Scrobbles the currently watching YouTube video to last.fm, optimised for YT-Center

Show YouTube thumbnail picture by button, near likes buttons. For old youtube design

Show YouTube thumbnail picture by button, near likes buttons.

Show YouTube thumbnail picture by button, near likes buttons.

Skips and removes ads on YouTube automatically

adds a remove button next to each video on each playlist page

adds a new button next to like that quick adds / removes the active video from your "Watch later" playlist

Set the default viewing mode to Theater Mode.

Blocks YouTube thumbnail hover previews (WebP & video) and stops channel trailers (video + audio). Keeps progress bars, play buttons, and static images. Works on all pages, no login or permissions needed, runs at document-start.