Who would want a synthesis image and why? Any number of folks for any number of reasons! Companies, nonprofits, or businesses like them to sum up lengthy reports. Website owners like them to show what their website has to offer in a glance. Educators use them to give the big picture of their topic. Professionals use them to showcase their experience...the list goes on!
No matter who uses a synthesis image or why, social media loves them! So if you're looking to draw people into your content, try a synthesis image.