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.
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.