What dimensions are the thumbnails?

All thumbnails are generated at 1280x720 pixels (16:9 aspect ratio) at 72 DPI — YouTube's exact recommended specifications.

Can I A/B test thumbnails?

Yes. Each generation produces multiple design variations so you can A/B test different approaches. YouTube's built-in thumbnail testing feature works great with our variations.

Free Tool

AI Thumbnail Maker

Create click-worthy YouTube and video thumbnails with AI

Generate high-CTR thumbnails for YouTube videos, video ads, and social media content. Our AI creates attention-grabbing thumbnail designs with bold text, expressive imagery, and proven click-driving layouts. Stop losing views to boring thumbnails — let AI design scroll-stoppers that get clicks.

Describe your video or upload a frame

e.g., YouTube video about '5 AI Tools That Will Save You 10 Hours a Week' — tech niche, excited expression, blue and orange colors

Choose File

Free with ShootFlo account. 100 free credits on signup.

How It Works

Describe your video or upload a frame

Enter your video topic and title, or upload a key frame from your video

AI designs your thumbnail

Our AI creates multiple thumbnail designs with bold text, colors, and layout

Download and upload to YouTube

Get a 1280x720 thumbnail optimized for maximum click-through rate

Features

Proven high-CTR thumbnail layouts and formulas

Bold text overlay with readable fonts

Attention-grabbing color schemes

Face and expression enhancement for reaction thumbnails

Multiple design variations for A/B testing

1280x720 output at YouTube's recommended specs

Perfect For

YouTube video thumbnails for maximum clicks

Video ad preview images on Facebook and LinkedIn

Podcast episode cover art

Webinar and live stream promotional images

Course and tutorial preview thumbnails

Social media video preview frames

Frequently Asked Questions

High-CTR thumbnails use bold, readable text (3-5 words max), expressive faces, high-contrast colors, and a clear visual hierarchy. Our AI applies all of these proven principles automatically.

Need More Advanced Features?

Upgrade to ShootFlo for custom model training, batch processing, video generation, and Shopify integration.