How To: Automatically Change YouTube Thumbnails

Article last updated on:
June 03, 2024

Yes, you can automatically change YouTube thumbnails. Though, you have to use a third-party tool like Thumbnail Test — it sends each thumbnail to different parts of your audience.

Let’s see how it works!

How to Automatically change Thumbnails

  1. Go to
  2. Log in through your YouTube Account
  3. Select a video
  4. Begin a test → Upload a few thumbnails
  5. Select the thumbnail changing frequency
  6. Apply changes

This is also known as A/B Testing for thumbnails. You just need to have a couple of good thumbnails and start a test.

FYI: YouTube doesn’t have an official feature yet, that’s why we’re using third party tools.


1. Why would I do this?

You’d want to change thumbnails automatically so you can figure out which one’s better for your videos.

Realistically — you’d do this so you can improve your CTR based on thumbnails.

2. For how long should I run the test? 

This depends on your video’s typical viewership growth. Aim for a statistically significant sample size (views) for each thumbnail before making a call.

3. Does YouTube provide this feature?

No, not at the moment. It has delayed for +5 years now:

Redditors being excited for YouTube A/B Testing in 2019

They’re only offering it for beta testers.

But that’s why tools like Thumbnail Test are your best friends!


This guide just took you through the process of automatically changing thumbnails.

Hope you found it useful!

Thank you for reading this,
Thumbnail Test

About the author

David is the head of the editing team at ThumbnailTest. With his help, the editorial team is able to provide you with the best free guides related to YouTube thumbnails and A/B testing.