At Patients Know Best we want every person to see and understand their health information. There are a number of features to make the software more accessibile for different abilities.


PKB works in any device with a modern browser and an internet connection. These include large screens such as library desktop computers and small screen such as smartphones. We recommend the latest versions of the Chrome, Firefox or Safari browser as these have the best web page support and the best security.

PKB login page in landscape view
PKB login page on smartphone


PKB works in 20 languages. The software automatically detects the language of the web browser and defaults to that language. The user can also manually choose the language from the drop-down menu at the bottom of a page.


Because PKB works in a web browser it supports full zooming. The arrangement the parts of the page fit to the new

PKB dashboard at 100% zoom

PKB dashboard at 150% zoom

Colour blind people can use the pages because the colours are distinguisable in grayscale. Where colour gives meaning, PKB provides a non-colour signal of the same meaning. For example, in the symptoms page, the severity of a symptom is indicated by the colour and the height of the symptom severity bar. To test this out you can use the Colour blindness empathy test extension on Firefox.

PKB's web page elements work with standard screen readers such as JAWS. The first link in the page allows skipping the navigation bar. Each element is audible in screen reader format. You an read the symptoms page below as it sounds in a screen reader.

The screenshots above show simple testing by choosing "No style" from the View > Page style menu in Firefox. For comprehensive testing use the JAWSInspect Firefox extension.