YouTube Thumbnail Sizes and Best Practices (New for 2019)
TechSmith Camtasia
JUNE 17, 2019
The ideal thumbnail size is 1280 × 720 pixels with a minimum width of 640 pixels, and the ideal ratio for YouTube players and previews is 16:9. Along with the correct size, you’ll also want to keep in mind the ratio, file size, and file type of your thumbnail. Use Snagit’s convert to PNG button to turn your video still into an image.
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