AI YouTube Thumbnail Generator

Turn portraits, video screenshots and a short headline into a clear 16:9 YouTube thumbnail.

Describe your video and thumbnail

Generate in Okou. Sign-in and account credits are required.Generate thumbnails

Start with:

YouTube thumbnail examples

AI-generated people and scenes with localized headlines. Open an image to view the full design and source prompt.

What makes a good YouTube thumbnail?

Make the video topic clear at a glance

Combine presenter cutouts, scene elements and a bold short headline.

Use this AI thumbnail maker for tutorials, reviews and business explainers in your channel's style.

Weekly planning: A presenter with red and green calendars and a bold planning headline.

How to create a YouTube thumbnail

Add your assets, compare layouts and download.

01
Describe the video
Add the title, a short summary, and a portrait or video screenshot.
02
Choose a layout
Adjust the presenter, scene, headline, expression and colors.
03
Review and download
Check accuracy and readability at phone size, then export a 1280×720 PNG.

What videos is it for?

Match the people and scene to your content.

Tutorials
Show the presenter with a demonstration and a clear learning goal.
Product reviews
Pair the reviewer and product with a short, accurate headline.
Business explainers
Use a work scene to introduce pricing, planning or operations.
Video series
Keep your channel's colors and headline style as topics change.

Pricing tutorial: A presenter, an arrow and two illustrative service prices.

How to find your channel's thumbnail style

Review your existing portraits, scenes and headlines, then compare results with channel analytics.

Analyze your YouTube channel

Inbox cleanup: A presenter with red and green inbox cards and a bold headline.

YouTube thumbnail examples

AI-generated people and scenes with localized headlines. Open an image to view the full design and source prompt.

Generated with Okou

Weekly planning

A presenter with red and green calendars and a bold planning headline.

Generated with Okou

Pricing tutorial

A presenter, an arrow and two illustrative service prices.

Generated with Okou

Inbox cleanup

A presenter with red and green inbox cards and a bold headline.

Get better results with connectors

Start with your topic and visual assets.

Useful connectors

YouTube
Google Drive
Google Docs

Create your next video cover

Review your existing portraits, scenes and headlines, then compare results with channel analytics.

Create my thumbnail Browse workflow examples

YouTube thumbnail FAQs

What size should a YouTube thumbnail be?

Use 1280 by 720 pixels at 16:9 and export as PNG. Check the dimensions before uploading.

Do I need to upload the full video?

No. A title, summary and relevant assets are enough. Add a screenshot to show a specific moment.

Can I use my own portrait or product screenshot?

Yes. Upload the original and specify what to preserve. Check faces, products and text in the result.

Can AI thumbnails improve click-through rates?

Results depend on your content, audience and placement. Compare designs with channel analytics and keep the cover faithful to the video.

Is thumbnail generation free?

Browsing examples and editing prompts is free. Image generation requires signing in to Okou and uses account credits.

Okou also has the youTube channel audit, the youTube comment analyzer, the AI infographic generator and the AI product photography.

Create your next video cover

Start with your topic and visual assets.

Create my thumbnail