> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://support.thumbnailtest.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Can’t you do this in YouTube already?

Yes, you can — YouTube [dropped this in June 2024](https://thumbnailtest.com/news/youtube-test-and-compare/).

**However:** Their tool is not as powerful as Thumbnail Test. With YouTube, you can only test 3 thumbnails per video — that's only if your channel is eligible for this feature.

**Besides:** You can't A/B test Shorts, kids content, or mature-labelled content. You can do all of that with Thumbnail Test.

YouTube has been postponing this feature for 5 and a half years — at first it was impossible to know what’s really gonna happen.

Have a look at [how Thumbnail Test compares against YouTube](https://thumbnailtest.com/guides/youtube-vs-thumbnailtest/).