mtools.lol

YouTube Thumbnail Tester

Preview your thumbnail and title in YouTube's home feed, search, sidebar and mobile, light or dark.

How it works

  1. 1Add your thumbnail.
  2. 2Type the title and channel name.
  3. 3Switch between home, search, sidebar and mobile.

Features

  • Four YouTube layouts.
  • Dark and light mode.
  • Title cut-off shown like YouTube.
  • Next to other videos so you can judge contrast.
  • Private: runs in your browser; nothing is uploaded.

Frequently asked questions

What size should a thumbnail be?

1280×720 px (16:9), under 2 MB, JPG or PNG.

Is this the exact YouTube layout?

It's a close approximation of the current layout; YouTube changes details often.

Related tools

YouTube Thumbnail MakerDesign a 1280×720 YouTube thumbnail with a bold title, a label and a guide for the timestamp area.YouTube Thumbnail DownloaderBetaPaste a YouTube link, see every thumbnail size available and download the one you want.Image CompressorMake JPG, PNG and WebP images smaller without visible quality loss.Carousel SplitterSplit a wide image into seamless carousel slides for Instagram or LinkedIn.