An about page is often underestimated because it is rarely the first page a visitor sees. Yet many people click there once the homepage has created interest. They are trying to answer a practical question: is there a real and credible business behind this website?
Most people do not read an about page because they want a full company biography. They want to know who is behind the site, what kind of business this is, how it works and whether it feels sensible to trust the company with a conversation or a project.