G Thumb turns a YouTube or blog title into five high-contrast thumbnail concepts built from proven formulas: curiosity gap, before/after, reaction face, big-number hooks, comparison layouts, and more.
Drop in the video title, optionally add a niche or face image, and the engine will render 5 PNG thumbnails you can review and download.
The engine scores each concept for click potential and rotates through layouts that consistently outperform plain title cards.
Open loops, hidden details, and “what changed?” framing that invite the click.
Big mobile-legible headlines, clean separation, and accent-driven focal points.
Five directions instantly, so you can compare emotion, numbers, contrast, and reveal mechanics.
Start free, then upgrade once you want unlimited generation or team workflows.
For testing hooks and previewing concepts.
For solo creators who iterate every week.
For media teams shipping volume across channels.
Click "Add to A/B" on any two thumbnails above, then compare them side-by-side with score breakdowns.