Post

The test: shrink a thumbnail to phone size and look for one second. If you can't read the hook or tell what the subject is, it fails. 7 of our first 14 failed outright — wide scenes, tiny subjects, text that blurred together.

The root problem: our thumbnails repeated the video title word for word. YouTube already shows the title right beside it, so half the text told viewers nothing new. Describing the video isn't the same as giving someone a reason to click.