Score your thumbnail
before YouTube does.
Upload a thumbnail and get a brutally honest AI score across six metrics: clarity, contrast, emotional hook, plus concrete A/B ideas to win more clicks.
Free to start · ~8s results · scored 0 to 100
Banger- ~Face + arrow nails the curiosity gap
- ~Censor blur practically begs the click
Banger- ~Shocked face stops the scroll cold
- ~Two faces fight for focus a touch
Solid- ~Bold caps read clearly at 120px
- ~Orange-on-teal contrast really pops
Solid- ~Numbered tags tease a payoff
- ~Subject is a little cluttered
Mid- ~Clear topic, but soft contrast
- ~Text wrestles the background
Mid- ~Clean layout, generic energy
- ~No face means a weak hook
Weak- ~Pretty, but no scroll-stopper
- ~Needs tension and bigger text
From upload to banger.
Scroll on to watch a thumbnail get rated, then generated from a prompt.
Shocked face + crashing chart; this one stops the scroll cold.
Bangerpowered by Nano Banana 2
✨GeneratedThree steps to a higher CTR.
Upload
Drop in any thumbnail. We auto-resize it on your device, nothing slow, nothing stored.
Analyze
A vision model scores it across six metrics the algorithm's audience actually reacts to.
Improve
Get a blunt verdict plus concrete A/B test ideas you can ship before you publish.
The kind of thing you'll hear back.
“Most thumbnails aren't bad. They're invisible. Banger tells you which one you just uploaded.”
“Your face reads as confused, not shocked. Lift the brows and open the mouth more.”
“Four words is the ceiling at this size. 'STOP THIS' beats a full sentence.”
“The subject melts into the background. Add a rim light or a thin stroke.”
“Two faces fight for attention. Pick one hero and shrink the rest.”
“Clean, but nothing makes me need to click. Introduce some tension.”
“I can't tell what the video is about in half a second on a phone.”
“Bold orange on teal pops against both the light and dark YouTube UI.”
“Great expression, but the empty right third feels unfinished.”
Simple pricing, live.
Free to start; just an account, no card. Upgrade for daily scans, AI thumbnail generation, and saved history.
Free
Live now- ~5 scans / month
- ~Full 6-metric breakdown
- ~A/B test ideas
Creator
Live now- ~25 scans / day
- ~10 AI thumbnails / month
- ~Saved history
Studio
Live now- ~1,000 scans / month
- ~250 AI thumbnails / month
- ~All Creator features included
AI thumbnails generated with Nano Banana 2