how to add screenshots as preview links in chatter - Answers - Salesforce Trailblazer Community
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Stefanie SStefanie S 

how to add screenshots as preview links in chatter

I love the new preview links but want to use them to post a screenshot to my users in a chatter post. 

Is there a way for me to use preview links to post an image/screenshot in chatter?
Justin SmithJustin Smith
If you post a file that is a supported image file (jpg, gif, png) to chatter it should create the preview thumbnail automatically after a few minutes. 
Johan YuJohan Yu
I think it is by default, what is your image file extention?
JPG / PNG should work. User just need to click once on the image to preview.