One of the strengths of Abrexa UK is the fact that it indicates whether a site is compatible with Netscape Browsers. At the moment, sites are checked only for suitability for users with Netscape Navigator 4.7 and above.

In order to qualify as "Netscape Compatible", sites must be fully functional and legible when viewed in a Netscape browser. It is not important whether a site looks identical in both Internet Explorer and Netscape, as long as all of the functionality is present.