Validate accessibility Learn how to validate accessibility for your app or website by finding and fixing issues like touch target size, color contrast, and content labeling. Open accessibility validation In Kobiton, select Sessions. Find a session, then select the session ID. Select Explorer. Select a yellow marker in the session timeline. Select View Details. Accessibility issues Touch target size The size of an element on the screen your user can interact with. If an element is too small some users may struggle to interact with elements on your app or website. Color Contrast The difference in light between a foreground element and its background. If the color contrast is insufficient some users may struggle to see elements on your app or website. Content labeling Each UI element on the screen should be properly labeled in your codebase. If a UI element is missing or using an incorrect label, users may be unable to use a screen reader with your app or website. Issue details Issue markers Issues are marked with a yellow dot both on the timeline and the device. Next and previous screen Move through each device screen with an issue. Each screen can contain multiple issues. Next and previous issue Move through each issue on the current device screen. Each screen can contain multiple issues. Issue description The issue description along with a link to the related guideline in Apple’s or Google’s accessibility guidelines. Visible The visibility of the selected element marked true or false. Xpath The Xpath of the selected element. Hover over the Xpath value to copy it to your clipboard. Text The text output of the selected element. Width The width of the selected element. Height The height of the selected element. X The X-coordinate on the screen of the selected element. Y The Y-coordinate on the screen of the selected element.