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Thumbnail Dimensions Checker
Drop in any image to instantly verify it meets YouTube’s thumbnail requirements: 1280×720 pixels, 16:9 ratio, under 2 MB.
How to use this tool
- Enter your thumbnail image above.
- Results update instantly in your browser – nothing is uploaded, no signup needed.
- Copy or download the result, then continue with the next step of your workflow.
FAQs
What size should a YouTube thumbnail be?
1280×720 pixels with a 16:9 aspect ratio is YouTube’s official recommendation. Minimum width is 640 px.
Why does my thumbnail look blurry?
Uploading an image narrower than 1280 px forces YouTube to upscale it. This checker shows your exact pixel dimensions so you can spot that immediately.
Which file types are accepted?
JPG, PNG, GIF (non-animated) and BMP, up to 2 MB. Pair this with our Image Resizer to fix oversized files.
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