YouTube Center contains all kind of different useful functions which makes your visit on YouTube much more entertaining.

Convert youtube video to MP3

A personal script for meh, but someone might need it!

Permet de marquer simplement une chaine youtube

Adds filter bars to YouTube's sidebar for Subscriptions and Playlists

Places an "Offliberate" button next to the subscribe button under YouTube videos. The button redirects you to Offliberty.com, where the conversion is started automatically. Based on "Youtube MP3 Download Button" by Soulweaver.

Know in advance how much videos are appreciated! The result of each video is the ratio between its likes and unlikes (Update: fixed bugs. If a video can't be analyzed, you will find "1/1" instead of the real ratio.)

Youtube OCD for likes unlikes Ratio is deprecated! Download the newest version here (more features): https://openuserjs.org/scripts/pietro.giucastro/Youtube_OCD_Sugoi_Ratio

This script generata a QR code to youtube page and if you scan with your smart phone. You get MP3 from video.

Removes all "You are leaving our site" and redirection stuff from links

No Youtube Advertisement

It hides masthead and its offset on youtube.com/* pages. This means it hides the navbar and shrinks the offset gap between it and the video so a video in theater mode can fit fullscreen.

Hides/Disables all youtube cards that appear on top of videos.

Pour ne plus oublier son devoir de citoyen

Adds the likes/dislikes light-saber to YouTube thumbnails, so you can avoid watching crap videos. Activates when mouse passes over a thumbnail.

Enables the hidden DEBUG button on YouTube.

Expand truncated titles in embedded YouTube videos on mouseover

Remove the notification counter from YouTube's title

change default YouTube video quality to 1080p or highest available below 1080p. can be used for other video qualities by changing preferred Quality in the code below.

printf("Que triomphe la vérité !");

printf("Que triomphe la vérité !");

Changes words with all caps in the youtube video title to only first letter in uppercase

Disabled the new 2017 YouTube Redesign (polymer) from appearing on page load.

Shows complete video thumbnails for YouTube videos. You can click a thumbnail image to jump to that point in the video.

Puts the video title in the location bar of all YouTube video pages. Now with extra features add scrollbars, animate thumbnails, reduce font sizes and un-float the header.