How To A/B Test YouTube Thumbnails

Article last updated on:
April 13, 2024

A/B Testing is a great way to find the best thumbnail for your video.

In this article, we’ll make it as clear as possible:

  1. How to A/B Test a YouTube Thumbnail
  2. How to Know if your Thumbnail is Good
  3. Check & Preview the Quality — for any video, whether it’s new or old

Plus more other tips.

How to A/B test a YouTube Thumbnail

1. Open up Thumbnail Test

2. Select the video you want to test

3. Click Next Step

4. Select Thumbnail Only

Feel free to test the title as well — for this test, we’re only going for the thumbnail.

5. Upload a few thumbnails to test them

Drag & Drop or click to upload in the grey box.

6. Customize the test’s settings: Frequency, Format, Length

7. Click Run Test

That’s it! You’ve just started your for A/B Test on YouTube.

Relevant: See what our co-CEO has to say about the YouTube A/B Testing industry!

Frequently Asked Questions

1. What is A/B testing for YouTube thumbnails?

It’s a process where you test two versions of a thumbnail (A and B) to see which one performs better in terms of attracting viewers.

2. Why should I A/B test my YouTube thumbnails?

To increase your video’s click-through rate (CTR), improve viewer engagement, and potentially boost your video’s ranking on YouTube.

3. Can I A/B test thumbnails on old videos?

Yes, and it’s a great way to re-spark interest in older content and possibly discover insights that can apply to new videos as well.

Read more here: Revive Old Videos.


This guide just took you through the most efficient way to test YouTube thumbnails.

How did you find it? Hope it was helpful and not very stressing.

Thank you for reading this,

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.