Venngage allows students (or anyone) to create and customize a variety of types of infographics. I’ve personally used this site and love it. One note of caution is that you cannot download image files of your Venngage projects unless you subscribe. Students who do not wish to subscribe can link to their files but not embed them in blogs or websites. You can link to Venngage by clicking the following link: http://www.venngage.com.
PiktoChart works similarly to Venngage. Students have used this program in the past with great success. I was impressed with the quality of the graphics they created. I haven’t personally used this program and don’t know its quirks first hand. You can link to the PiktoChart website by clicking the following link: http://www.piktochart.com.
Infogr.am is a tool used by a couple of my students in the spring of 2016. One student noted: “I really enjoyed pulling together the infographic. I feel that was my strongest assignment all semester. I especially liked using a tool as slick as infogr.am. It is really easy to use, but theresults look very professional.” To experiment with Infogr.am click the following link: https://infogr.am.
I’ve also recently posted a resource on free photo editing programs, just in case you want to create an infographic from scratch.
Looking for infographic inspiration? You could also check out the book Best American Infographics 2015 (ISBN 978-0-547-97451-4) for some beautiful examples of artful infographics.