Yes. One free tool to check a web page’s accessibility is WAVE, Web Accessibility Evaluation Tool, available from WebAIM, Web Accessibility in Mind. WebAIM is a partnership between the Center for Persons with Disabilities and Utah State University. Keep in mind, that while WAVE will give you some preliminary information, it is important to review the results to make sure you understand what it means for your website. For example, if WAVE says that a description for a picture is missing, you have to determine if that picture is important in letting people know what your site is trying to say. It would also be valuable to reach out to users with disabilities to get firsthand feedback. One way you might try to do this is by contacting your local center for independent living to see if they have staff or consumers’ with disabilities available who might be willing to give input.