Open YouTube maxresdefault Thumbnail
No longer supports upgrade . Please see https://addons.mozilla.org/ru/firefox/addon/boost-youtube/.
On YouTube Player page, in address bar is adding icon. Click it and open new Tab with maxresdefault.jpg
Open YouTube maxresdefault Thumbnail
Open YouTube maxresdefault Thumbnail is a simple and lightweight Firefox add-on that adds a button in the address bar of YouTube videos to easily open the maxresdefault thumbnail. It is easy to use and does not contain any spyware. Please note that sometimes the YouTube API may incorrectly respond that the maxresdefault.jpg thumbnail is not available, but this add-on still provides a convenient way to access it. For more information and updates, please visit the official page: [https://addons.mozilla.org/ru/firefox/addon/boost-youtube/](https://addons.mozilla.org/ru/firefox/addon/boost-youtube/)
Add-on stats
Weekly download count: 1
Firefox on Android: Yes
Risk impact: High risk impact 
Risk likelihood:
Manifest version: 2
Permissions:
- tabs
- activeTab
- *://*.youtube.com/embed/*
- *://*.youtube.com/watch*
Size: 10.85K
Ranking
Other platforms
Not available on Chrome
Not available on Android
Not available on Edge
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Add-on summary
No longer supports upgrade . Please see https://addons.mozilla.org/ru/firefox/addon/boost-youtube/. I make addons for self. I try make it max small and simple. No spy ware. Sometimes, youtube API response that maxresdefault.jpg thumbnail is not, but it is. The addon on any Youtube video player page, in address bar, add button with link to maxresdefault.jpg.
User reviews
simple and effective
by Firefox user 13384713, 2019-07-09
by Firefox user 14579634, 2019-01-22
Fantastic!
Compact, and does exactly what I wanted.
by Firefox user 14053287, 2018-05-25
Add-on safety
Risk impact
Open YouTube maxresdefault Thumbnail requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk likelihood
Open YouTube maxresdefault Thumbnail is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Upgrade to see risk analysis details