Drop your thumbnail here
or click to browse, or paste from clipboard (Ctrl/Cmd+V)
JPG, PNG, WebP or GIF · up to 10 MB · 1280×720 recommended
These are illustrative layout previews, not a live YouTube interface or a prediction of clicks. Actual layouts can vary by device and change over time. GIF files are rendered as a still preview; downloads are PNG images.
Supported formats and limits
- Input formats: JPG, PNG, WebP, GIF. Anything else is rejected with an error message.
- Maximum file size: 10 MB. Larger files are rejected before they are read.
- Recommended size: 1280×720 (16:9). Other sizes are accepted and cropped to 16:9 to match how YouTube renders them.
- Placements covered: home feed, search results, watch page, Shorts, mobile feed, sidebar — six layouts, each downloadable as PNG.
- No account, no upload. Everything runs in this browser tab. Your image never leaves this machine.
How to use this thumbnail tester
- Drop in your thumbnail, or paste it from the clipboard.
- Type the title you plan to publish with, plus channel name, views, duration and publish age if you want the card filled in.
- Switch between the six placements to see how it holds up where viewers will actually see it.
- Hit Download PNG to save the placement you are looking at.
FAQ
What is a thumbnail tester?
A youtube thumbnail tester renders your image and title inside the layouts YouTube actually uses, so you can check cropping, text size and contrast before you publish instead of after.
Is this yt thumbnail tester free?
Yes. No signup, no upload, no watermark. It runs entirely in your browser.
Can I test the thumbnail and title together?
Yes. This youtube thumbnail and title tester draws the title next to the image in every placement, because a thumbnail rarely fails on its own — it usually fails by repeating what the title already says.
Does it score my thumbnail?
No. It shows you what viewers will see. Judging it is your call.