

I run Thumbnail Grabber, a small site with free tools for everyday media work. The YouTube thumbnail downloader was one of the first pages I built there, and it is still the one people use most. Creators, students, and marketers kept asking how to save a video’s cover image at full size, or pull captions without digging through browser tools they did not trust.
The page at thumbnailgrabber.net/youtube is simple. You paste a public YouTube link, click Fetch, and the tool shows the video title, channel, and basic details. It lists the standard thumbnail sizes YouTube exposes (from small previews up to the largest available, often 1280 by 720 when the creator uploaded one). You download the size you need with one click. There is also an optional subtitles section: turn it on before fetching and you can grab captions in common formats when the video has them.
I did not add full video downloading. The focus is thumbnails, subtitle files, and metadata you might want for research or your own projects, like copying keywords or saving video details to a text file. There is no account and no signup. I wanted something you could open, grab what you need for one video, and close.
It is free to use. I am sharing it here in case it saves someone else the same back and forth I kept seeing. If a URL type or subtitle language does not work as expected, I am happy to hear about it so the tool can improve over time.
Scraper Email for Product Hunt Daily leaderboard and peerlist, tinylaunch, uneed.
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