Create high-performing YouTube thumbnails in minutes. No designers. No waiting. Full control.


Trusted by creators worldwide
Working with designers sounds right. In reality, it kills momentum.
"If a thumbnail doesn't work in the first hours, you're stuck."
If your thumbnail doesn't perform in the first 3–6 hours, you need a new one. Fast.
Create, change, and iterate thumbnails instantly. No limits. No waiting.
























































Generate as many versions as you need. Compare and pick the winner.
Make changes on the fly without waiting for anyone.
Quickly A/B test to find what drives the most clicks.
Prompts are hard. That's why we broke thumbnail creation into a clear, guided system.
We guide you through the process — no guesswork required.
+ 6 more steps…
Control emotion, background, text — every element that drives clicks.
Emotion
Background
Text style
Hook
You just follow the process. No prompts, no technical skills.
"Create a YouTube thumbnail with bold red text, dramatic lighting, shocked face…"
Pick your style. Click Next.
AI builds the prompt for you.
Same video. Different result.
Impressions click-through rate
3.2%
Impressions click-through rate
18.6%
91% more than previous 7 days
Everything you need to know about Thumly
Still have questions? Contact us
Stop waiting for designers. Start testing thumbnails that actually perform.
Create your first thumbnailFree to start · No credit card required