Thumbnails - where to preview their results

I am trying to understand how actually transformation pipeline works in DAM. I need to create automatically several different versions of one photo for our web site. I understand that for each version I can create Thumbnail. I can not get my head around where and how to preview the the generated picture by Thumbnail. In DAM I can only see original picture…
Thanks

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Ok Thanks so there is no preview and only download possible?

Hello @bogus-glitch!

The preview of the thumbnails can be seen directly in the CMS document editor.
Have a look at our demo
https://demo.pimcore.fun/en/More-Stuff/Developers-Corner/Thumbnails

Backend URL
https://demo.pimcore.fun/admin/login/deeplink?document_39_page (Username: admin
Password: demo)