Here's even more: - Site should work even if the page is zoomed in (e.g., visually impaired people may do this). There are two kind of zooms in browsers, one z

Here's even more: - Site should work even if the page is zoomed in (e.g., visually impaired people may do this). There are two kind of zooms in browsers, one zooms the whole page pixel by pixel. The other one zooms only fonts. It is usually tricky to get the font zooming look good. - Icons and images should look good in high resolution retina screens. Bitmap graphics have a tendency to look pixelated in retina screens if not done properly. See http://www.html5rocks.com/en/mobile/high-dpi/ http://www.html5rocks.com/en/mobile/high-dpi/ and http://www.html5rocks.com/en/mobile/easy-high-dpi-images/ http://www.html5rocks.com/en/mobile/easy-high-dpi-images/ - Some people use Screen Readers to browse the web. The web site should have easy navigation and have text for all non-textual content. See http://webaim.org/techniques/screenreader/ http://webaim.org/techniques/screenreader/ Also, you already mention responsive design for various screen sizes. You could mention that it means the pages should look ok on tablets and phones. EDIT: I just can't stop... one more thing: The page should load fast even for users who are using 3G networks