Mobile usage is skyrocketing and Google is now requiring that websites get prepared for it. Starting April 21st, Google is including ranking sites based on their mobile-friendliness and if you’re website was built, before HTML 5, your site is most likely not mobile-friendly, which will impact your rankings on Google’s Search.
Check out your website’s mobile-friendliness by visiting Google’s Webmaster Tools to test any mobile issues with the images pr coding and make changes now, before your site suffers being ranked lower, after April 21st.