To create a thumbnail version of an image associated with respective content (e.g., a web page), a computer process herein receives an identification of content formatted according to a first format. Based on the identification of the content to be converted into a thumbnail, the computer invokes a first service to utilize the content formatted according to the first format (e.g., HTML) and produce a rendition of the content according to a second format (e.g., a PDF format). The computer then invokes a second service to produce a rendition of the content according to a third format based on the rendition of the content according to the second format. The format of the thumbnail has a lower resolution compared to a respective imaging resolution associated with the PDF format to reduce network resources required to transfer the thumbnail rendition of the content to other users in a collaborative whiteboard session.