YouTube Normalizer is a free Chrome extension that automatically normalizes the sound level of all YouTube™ videos. It is fully automatic and adjusts all videos to the same sound-level. The extension also blocks ads and allows users to download videos for watching offline later.

YouTube Normalizer is an add-on and tool in the browser category. It is not associated with YouTube or Google Inc in any way, as it is stated in the note. Users can install the extension easily and quickly from the Chrome Web Store.

The automatic sound normalization feature ensures that users don't have to adjust the volume for each video they watch. The ad-blocker feature blocks annoying ads that interrupt the viewing experience. The download feature allows users to watch videos offline, which is especially useful when traveling or when internet connectivity is limited.

Overall, YouTube Normalizer is a useful and convenient extension for Chrome users who watch a lot of YouTube videos and want to have a consistent viewing experience without the hassle of adjusting the sound level or dealing with ads.