This is just a beginning. There are many more rhetorical tools we could use to analyze visuals, but these six will suffice for our introduction:
Ethos, Pathos, Logos, Audience, and Kairos
Analyzing visuals with these rhetorical tools
Goodnites (Parents)
Oatmeal (Good Housekeeping)
Advil (Runners World)
Gant (Spy)