AI YouTube Thumbnail Generator

Because image models spell badly. They produce plausible-looking letters that form misspelled or invented words, and a thumbnail with a typo is worse than no thumbnail. Adding your title yourself takes a minute and gets you your own font at a size you control.

1536×1024, which is 3:2 — the widest the model produces. YouTube thumbnails are 16:9, so the preview shows the crop rather than the raw file, and the prompt asks for a composition that survives it. Nothing important sits near the top or bottom edge.

Yes. Images generated through the OpenAI API belong to you, including for monetised videos. What you cannot do is generate something that infringes an existing work or depicts a real person misleadingly.

YouTube requires disclosure for realistic synthetic content that could mislead — a real person doing something they did not do, a real event that did not happen. A generated background for an essay video is not that. When in doubt, disclose; the label costs nothing.

Cost. A text generation costs a fraction of a cent; an image costs about thirty times more and takes fifteen seconds of compute. Ten a day per account keeps it genuinely free instead of quietly becoming a paid feature.

Not by being AI-generated. What hurts is being generic — and generic is the default failure mode of any generator. Treat the output as a background to build on, not as a finished thumbnail to publish as-is.