Generate thumbnails
optimized for CTR.
Describe your video. Get 4 AI-generated variants, each ranked by projected click-through rate. Trained on what actually performs — not what looks pretty.
From prompt to thumbnail in seconds.
Type a prompt: topic, tone, target emotion. Optionally upload a reference image for style matching.
Each variant is generated with a different composition strategy — face-forward, text-heavy, drama, curiosity gap — and scored by projected CTR.
The highest-projected CTR variant is flagged automatically. Download any or all variants at full resolution.
Optimized for click, not for pretty.
CTR-first generation
Other tools generate pretty images. We optimize for click-through rate — trained on what actually performs on YouTube, not what looks good on a portfolio.
Pattern-trained, not prompt-engineered
The model learned from 300k+ thumbnails paired with real performance data. It understands face size, text placement, contrast, and composition — not just aesthetics.
Four variants, one decision
We show you the options so you pick the one that fits your brand. The CTR score tells you which one would likely perform best if you're unsure.
These tools are free because Base.Tube makes money when creators monetize — not when they pay for SaaS. When you're ready to turn your audience into income, we're here.