YouTube thumbnail size and how to get it right

Your thumbnail is the first thing a viewer sees. Get the size wrong and YouTube adds black bars or crops faces. Get it right and it looks sharp on a TV, a laptop and a phone.

Updated September 27, 2026. 2 minute read.

Quick answer

Use 1280 x 720 pixels (16:9), JPG or PNG, under 2 MB. Crop it with the Social Media Cropper, then check it in the Thumbnail Previewer.

Open the Social Media Cropper

Step by step

  1. Open the Social Media Cropper and choose your image.
  2. Pick the YouTube thumbnail size (1280 x 720).
  3. Drag and zoom so the face or main subject sits a little off center, away from the bottom right corner.
  4. Download the image, then open it in the Thumbnail Previewer with your title to see how it looks in the feed.

YouTube thumbnail requirements

SettingValue
Recommended size1280 x 720 pixels
Minimum width640 pixels
Aspect ratio16:9
File typesJPG, PNG or GIF (not animated)
File size limit2 MB
Custom thumbnailsNeed a verified channel

Design tips that work at small sizes

Most people see your thumbnail at about the size of a postage stamp. Use one clear subject, a face with a strong expression if it fits, and no more than three to four big words. The video length badge covers the bottom right corner, so keep text out of it. Test on the mobile layout, because that is where most views happen.

Tips

Over 2 MB? Run the file through the Image Compressor at quality 85.

Cut yourself out with the Background Remover and place the PNG over a bold background.

Your title and thumbnail should work together. Do not repeat the title word for word on the image.

Ready to try it?

The Social Media Cropper is free, needs no sign up, and your files never leave your device.

Open the Social Media Cropper

Frequently asked questions

What size should a YouTube thumbnail be?

1280 x 720 pixels with a 16:9 aspect ratio, at least 640 pixels wide.

What is the file size limit?

Custom thumbnails must be under 2 MB. Compress JPGs if yours is larger.

Why can I not upload a custom thumbnail?

YouTube asks you to verify your channel (usually with a phone number) before custom thumbnails are allowed.

Does a bigger image look better?

A 1920 x 1080 image is fine too, as long as it is 16:9 and under the size limit. YouTube scales it down.

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