Youtube Runningtime Counter is a Chrome add-on that allows you to calculate the total play time and playback speed of your YouTube playlists. With just one click, you can easily check the running time of your current page playlist and effectively manage your time.

This add-on is especially useful for those who prefer watching videos at 1.5x speed, as it sets this speed as the default. By using Youtube Runningtime Counter, you can ensure efficient time management while enjoying your favorite videos.

The latest version, Ver1.5, includes various improvements and fixes. It now features video title animation and has resolved an issue where video titles were not obtained from user-created playlists. Additionally, it displays a warning message when a page has a limit of 200 videos and handles scroll-down events when more than 100 videos are displayed on the playlist's main page. Thumbnail image sources have also been updated to accommodate recent changes on YouTube.

Overall, Youtube Runningtime Counter is a convenient tool for accurately calculating and managing the play time of your YouTube playlists.