#1 Make GIFs
Add "GIF" at the start of the YouTube URL. A YouTube GIFs website will open where you can make your GIFs.
#2 Find Your Favorite Artist’s Page
Find albums of your favorite artist by simply pressing # followed by their name with no spaces.
#3 Tracks For Karaoke
There is a free app for chrome called "Musixmatch" which provides subtitles for youtube videos. You can enjoy seven million songs in this app.
#4 How To Find Out What Song Is Playing In A Video
Just copy and paste the link in MooMa.sh and it will help you to identify any song playing in the YouTube video.
#5 Theatre Mode
You can use theatre mode by clicking on the small rectangle in the corner of the video.