The thumbnail decides whether a video gets clicked or scrolled past. A good one reads on a small screen in half a second: a big headline, one clear scene, contrast and emotion. The thumbnail maker puts all of that together from a short description.
Write a headline — GPT Image 2.5 places it neatly on the image, in any language. Describe what should be in the frame and pick a style: Viral with bright colors and arrows, Minimal, Tech, Gaming, Beauty or Business. Upload your photo and you'll be on the thumbnail, with your features preserved.
Formats: YouTube 16:9, vertical 9:16 for Reels and Shorts, 4:5 post and 1:1 square. Get up to four different options in one run and pick the best — or test two of them with YouTube's thumbnail A/B testing.