As we all know search engines can not read visual content, they only read text. That being said, how does one best utilize keywords on a wordpress based website focused on pictures and videos without using keywords written in posts? On a wordpress site, where posts usually include 1 picture/video with no text, the title being used as a catchy caption relating to the picture/video but includes no keywords... In this situation, how does one incude keywords within these posts without including text in the posts? To my understanding it is best to use a keyword 2 times maybe 3 times in each post, how can this be achieved in the above situation, can this be achieved with wordpress tags?