YouTube Thumbnail Downloader
You can download YouTube custom video thumbnails in 3 different qualities, Low, Medium & High, that too without any kind of hassle. Just paste the URL, press the ‘FETCH’ button and you have 3 high quality buttons on your screen. You can even download thumbnails from your mobile phone too, because the whole concept was to make it responsive and look good.
All the credits go to the designer of the tool, Harsh Trivedi.
Follow his projects on Github.