When text is placed over a background image, it may be difficult for some users to read. Developers and designers can use this simple tool to check whether text is readable over an image. It is especially useful for multicolored or patterned background images where text may be readable over some parts of the image but not others. To use the tool, visitors enter their text, select the text color and font size, and upload their background image. The tool will identify colors in the image's palette and give each color a pass/fail grade and a compliance percentage. The assessment is based on criteria including text size and color contrast in line with standards developed by the World Wide Web Consortium (W3C). Users can scroll to the References & Credits section at the bottom of the page for more information about the accessibility standards on which the tool is based. The tool was created by User Experience Developer Andrew Brandwood.