Y- is a social & communication chrome extension. it's a free extension , it has 1 active users since released its first version, it earns an average rating of 5.00 from 2 rated user, last update is 2503 days ago.
This chrome extensions speed down the youtube video also: Y+ app for the speed up :) v1.1 fixed default speed v1.2 update
You could download the latest version crx file or older version files and install it.
English.
You could find more help information from y- support page.
You could send emails to publisher, or check publisher's website.
More about manifest_file of y-.
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