How to get Document Thumbnail via Rest API (SharePoint online - classic experience) for excel, word and pdf files?

Question

I'm looking at getting a thumbnail image of documents when uploaded into a document library. I can see the thumbnail preview when I click on ellipses (...) context menu of the document. Is there a way to somehow get this document using Rest API?

I did try the below for a .png file.

https://tenant.sharepoint.com/sites/test_layouts/15/getpreview.ashx?path=https%3A%2F%2Ftenant.sharepoint.com%2Fsites%2Ftest%2FTestWork.png 

It worked for .png file but not for word, excel or PDF documents.

Thanks in advance

Answer 1

Not sure if you know rest api but This should return the url of the thumbnail -->

/_api/web/lists/getbytitle('title')/items(itemid)?$select=EncodedAbsThumbnailUrl