Operating Systems We support Windows XP and higher and Macintosh OS X 10.6 and higher on WeightWatchers.com. While it is possible to visit our website with other operating systems, they may not load all of a webpage’s features, and we’re unable to provide support for them. WW recommends that you use the most recent version of one of our supported web browsers to have the best experience on our site. While we do believe that the most recent versions will give the best experience, we currently support Internet Explorer 8 and higher, Firefox 10 and higher, Safari 5 and higher, and Chrome 8 and higher. Cookie Configuration Please make sure your browser has been configured to accept cookies, as otherwise you will not be able to log into WeightWatchers.com. Cookies are small text files placed on your computer that work with your web browser to facilitate your logins and to provide us with other important information, as described in our Privacy Policy. For more details about cookies and the kind of information we collect from cookies, please read our Privacy Policy. JavaScript Our site also uses JavaScript. Most browsers have JavaScript enabled by default but they also allow the user to disable or enable it. We require JavaScript to be enabled for our site to function properly.