YouTube Extension Suite is a youtube extension for chrome. also, it is youtube extender extension. it's a free extension , it has 59 active users since released its first version, it earns an average rating of 3.00 from 2 rated user, last update is 2583 days ago.
This extension is still in heavy development! Right now the only feature is that it shows the length of time it would take to watch a playlist. I have a lot planned, so stay tuned for more features coming soon!
You could download the latest version crx file or older version files and install it.
100% user give 1-star rating. Read reviews of youtube extension suite
You could find more help information from youtube extension suite support page.
You could send emails to publisher, or check publisher's website.
More about manifest_file of youtube extension suite.
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27/11/17 Really useful Works on normal YouTube No longer works with 'Try out a fresh look for YouTube' enabled from TestTube: https://www.youtube.com/testtube :( Works with &disable_polymer=true in the playlist link but not with the new YouTube design