Guides / YouTube thumbnail size

YouTube thumbnail size: the right dimensions and tips

By Ryven Studios · 2 min read · Updated October 21, 2026

Your thumbnail is the first thing people see before they decide to click. A blurry or badly cropped thumbnail makes even a great video look unprofessional. Here's the size to use and how to make it look sharp everywhere.

The right size

SettingRecommendation
Size1280 × 720 pixels
Shape16:9 (wide)
Minimum width640 pixels
File typeJPG or PNG
File sizeKeep it under YouTube's upload limit (2 MB at the time of writing)

A 16:9 thumbnail matches the shape of the video player, so it fills the space with no black bars or cropping.

Make it readable on a phone

Most viewers see your thumbnail at a small size, in a phone feed or in the "Up next" list. Design for that:

How to turn any image into a thumbnail

  1. Open the YouTube Thumbnail resizer.
  2. Choose your image, such as a screenshot from your video or a photo.
  3. Choose how it should fit: Fill frame fills the whole thumbnail (edges may be trimmed), Show all keeps the whole image with a blurred background, and Add border uses a plain color.
  4. Download the image. If the file is too large to upload, run it through the Compress tool.

Uploading your thumbnail

In YouTube Studio, open your video's details and choose to upload a custom thumbnail. If you don't see that option, your channel may need to be verified first. YouTube explains how in its help pages.

YouTube can change its thumbnail rules. If an upload fails, check YouTube's help pages for the current requirements.

Try it free, right in your browserMake a YouTube thumbnail →
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