This is the story of how one accessibility auditor came to a website and found some errors, and then came to a web application and found the same errors... and decided to tell everyone! Accessibility is a new area for developers, where there is not yet much experience to rely on. In accessibility, it is always difficult to put yourself in the place of each user and understand what will be convenient for them and how to implement it right. In the talk, I will show the most common developers' mistakes that I find on any platform during an accessibility audit.