Text on Thumbnail
Whether the thumbnail has text overlaid on the image. This could be a few bold words reinforcing the hook, a quote, a label, or a full sentence.
Thumbnail text gives you a second hook beyond the title. While the title might be truncated in mobile feeds, the thumbnail is always fully visible. A few bold words on the thumbnail can reinforce the title's promise or add a complementary hook that catches different viewers.
Average Video is the effect on a typical video. Top 10% Video is the effect on the videos that broke out (top decile of views) — so you can see whether a factor helps most videos a little, or pushes the top performers much higher.
When present
The thumbnail includes text overlay that reinforces or complements the title's hook.
Videos with this factor
When absent
The thumbnail is purely visual with no text overlay.
