Internet users with limited vision can make use of a screen reader. However, screen readers need help from site authors to be optimally useful. You can see how a screen reader works from this Youtube video.

There are several things to watch for when making your web pages accessible. For example, images should always have "alt" tags to give a text description of the image. For persons with some vision, the contrast between text and background should be sufficient to make reading the text possible. There are are a number of other ways to ensure persons with limited vision can benefit from your website.

It can be difficult to know if you site is reaching accessibility standards. However, the Chrome Lighthouse extension is a very useful tool that you can search for and install. With the Lighthouse extension installed, navigate to the page you wish to check for accessibility and click the Lighthouse icon. Choose the "accessibility" option, and then hit "Generate Report."

Lighthouse will give you a score from 0 to 100% on the accessibility of that web page. But not only that, Lighthouse will show you the audits it has performed, including the ones you passed and the ones you failed. For example, the "image" audit will tell you which images are lacking an "alt" tag. We all want to aim for a 100% score on all accessibility audits.

Lighthouse will also score your webpage for SEO, performance, and other metrics. For some of these, reaching 100% can be difficult. But on accessibility, 100% is easily reached and maintained if we just make the effort.

If your score is less than 100%, ask your developer to check your site.