Thumblr

I'm Alex, and I built Thumblr because small YouTubers aren't necessarily graphic designers and don't necessarily have the means to hire a professional.

The problem?
Great thumbnails take forever to design, and most creators aren't designers.

The solution?
Describe your idea in plain English, and AI generates scroll-stopping thumbnails in seconds.

But here's what makes Thumblr different:

🎨 Sketch Mode — Can't describe what you want? Just draw it! Sketch your rough idea directly in the canvas, and AI transforms your doodle into a professional thumbnail. It's like having a designer who reads your mind.

🧩 Chrome Extension — Preview your thumbnails directly on YouTube before uploading. See how they look in search results, on the homepage, or next to competitors. Test, compare, then publish with confidence.

🔍 Explore & Get Inspired — Stuck on ideas? Browse our public gallery to see what other creators are generating. Find a prompt you love? Use it as a starting point for your own thumbnail. No more staring at a blank canvas.

🚀 Built for iteration — Each generation is a conversation. Refine your prompt, add reference images, tweak the style until it's perfect.

And more to come !

If you've read this far here is a 10% discount code for you: UNEED10

Affiliate program 20% commission: https://thumblr.lemonsqueezy.com/affiliates