YouTube Watch Later is a small extension that adds an "Add to Watch Later" button to videos on various pages, and in the notification drawer. Simply install the extension, configure it to your likings inside the popup, and go add those videos to your Watch Later playlist! Have you ever browsed YouTube and used that "Add to Watch Later" button? Me too. Are you annoyed when you want to use that button, but it is not there? Me too! Would you love to always have such a button, so you can instantly add videos to your Watch Later playlist? ME TOO! -- The following general settings can be configured:

"Mark notifications as read" allows for notifications to be marked as read when you add those videos to your Watch Later playlist.
"Logging" allows the plugin to send logs to your console. Could be useful for debugging purposes.

The following button settings can be configured:

"Visibility" allows you to set the visibility of the button to either "always" or "hover".
"Opacity" allows you to set the opacity of the button to either "full" or "half".
"Position" allows you to set the position of the button to either "top left" or "top right".

Please note that a page reload is required for the button settings to take effect. -- This extension is open source! Links to the source code, and more detailed specifications, can be found on the website.