What is the minimum YouTube thumbnail size?

In 2026, the minimum YouTube thumbnail size is an image with a width of 640 pixels. But the recommended size is 3840 (width) x 2160 (height).

Quickly create an impactful YouTube thumbnail with Quillbot’s free YouTube Thumbnail Templates tool.

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Image tools: Other interesting questions

How many images are in an Instagram carousel?: There are up to 20 images in an Instagram carousel. You can add fewer, but that is the maximum number of images you can add to one carousel.

If you want to try using an AI image generator for social media posts you can upload as an Instagram carousel, try Quillbot’s AI image generator. Or, check out Quillbot’s range of ready-to-use and editable Instagram templates to get a head start on your Instagram post ideas and start growing your followers.
Is the Quillbot background remover free?: Yes, Quillbot’s background remover is free to use.

When you’re logged in, you can use it up to five times a day for free. If you’re a Premium Quillbot user, you can use it as many times as you want.
What size is a hero image?: A full-screen hero image is typically sized at 1280 × 720 pixels with a 16:9 aspect ratio, ensuring clarity on most screens. However, depending on your site’s design and target devices, you might opt for larger dimensions, such as 1600 × 900 pixels or 1920 × 1080 pixels, to maintain image quality on high-resolution displays.

Always test your image across various devices to ensure it loads quickly and appears sharp. You can use Quillbot’s AI Image Generator to create high-quality visuals that fit your design, then adjust them as needed.
How can I make a YouTube thumbnail?: You can make a YouTube thumbnail using a template like the ones in Quillbot’s free YouTube Thumbnail Templates tool.

When saving the file, choose the recommended YouTube thumbnail size of 3840 x 2160 pixels and limit the file size to 50 MB (2 MB for mobile upload).
What is Nano Banana?: Nano Banana is Google’s AI image generator and editor. This tool allows its user to create and transform photos using text prompts, with stunning results.

If you’re interested in trying this tool, try out some Nano Banana prompts to start bringing your ideas to life.