How do I preview my YouTube thumbnail?

Upload your thumbnail image and enter a video title and channel name. The tool shows how your thumbnail will appear in YouTube search results, suggested videos sidebar, and the homepage grid.

What is the recommended YouTube thumbnail size?

1280 x 720 pixels (16:9 aspect ratio) with a minimum width of 640 pixels. The tool warns you if your image doesn't meet these requirements.

Can I compare two thumbnails?

Yes! Upload a second thumbnail to see them side by side and pick the one that stands out more.

Yes, completely free. No signup required. Everything runs in your browser.

Are my thumbnails uploaded to a server?

No. Your images stay in your browser. Nothing is uploaded anywhere.

Free YouTube Thumbnail Previewer

See how your thumbnail looks in YouTube search results, suggested videos, and homepage before uploading.

Drop your thumbnail here or click to browse

Recommended: 1280 x 720px (16:9)

How to use this tool

Upload. Upload your thumbnail image (1280x720 recommended).
Enter details. Enter your video title and channel name.
Preview. Preview how it looks in search, sidebar, and homepage.

Generate YouTube thumbnails at scale

Create thumbnail templates in Imejis and generate variations via API for every video.

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