YouTube Thumbnail Sizes and Best Practices (New for 2019)
TechSmith Camtasia
JUNE 17, 2019
That’s why creating a great custom YouTube thumbnail is so important. 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.
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