The colors of pixels used in bit-mapped images (e.g. .png, .jpeg) do not respond to changes in media query values making them difficult or impossible for people with some types of visual impairments to see when the change contrast settings. Low resolution images also do not scale smoothly when the browser zoom features are used to increase the size of rendered content and the resulting distortion will make it more difficult or impossible for people to identify the component.
+The colors of pixels used in bit-mapped images (e.g. .png, .jpeg) can respond to media queries by changing the actual image rendered or by applying a CSS filter to the image. Even when one or more of these techniques are used to respond to changes in contrast settings the resulting images may still be difficult or impossible for people with some types of visual impairments to see. Low resolution images also do not scale smoothly when the browser zoom features are used to increase the size of rendered content and the resulting distortion will make it more difficult or impossible for people to identify the component.
Note: Bit-mapped images used for components should meet WCAG 1.4.3: Contrast (Minimum) requirement.