4K video screenshot
- Input
- 3840×2160 px PNG
- Expected output
- 1280×720 px JPEG 85%
"YouTube Thumbnail" preset available. 16:9 ratio maintained, no crop.
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YouTube thumbnail 1280x720
YouTube thumbnails are displayed in very different contexts: search (small), results page (medium), video page (large) and TV (very large). That is why the recommended dimension is 1280×720 px at 16:9 ratio, large enough to maintain sharpness on all screens, including 4K monitors. Smaller thumbnails are upscaled and lose definition.
"YouTube Thumbnail" preset available. 16:9 ratio maintained, no crop.
Use the Crop tab to select the most interesting 16:9 region before resizing.
Crop will remove content from sides or top/bottom. Plan your framing.
Resizing changes the dimensions of the entire image, it becomes larger or smaller, but the content is preserved in full (possibly distorted if the aspect ratio changes). Cropping selects a specific region and eliminates the rest, the resulting dimensions are exactly those of the selected area.
Yes, YouTube accepts both. 1920×1080 (Full HD) offers more pixels for details, an advantage on larger screens and 4K. The file will be larger, but still within the 2 MB limit at JPEG 85%. The 16:9 ratio is what matters most.
Most common causes: image uploaded smaller than 1280×720 (YouTube upscales and blurs it), file with too much JPEG compression before upload (block artifacts), and rendering on high-density screens (Retina/HDPI) where non-2x images appear blurry. The solution is to start from a high-resolution source, at least 1280×720 px, ideally 1920×1080 px.
The image is processed entirely in your browser. No data is sent to the server.