Paessler Site Inspector is a web browser that combines the two most frequently used browser engines (Internet Explorer and Mozilla/Gecko) into one program. Its advanced analysis features make it the perfect companion for webmasters and web developers. With Site Inspector's internal browser, users can switch between the two browser engines with just one mouse click, for example to compare the rendering of a page in both browsers. The sophisticated analysis functions, which also integrate into Internet Explorer and Firefox, make analyzing and debugging web sites easy.

The analysis features can be accessed from within the Analyzing Browser as well, with convenient toolbars that Site Inspector adds to Internet Explorer and the Mozilla Firefox browser. Whenever you access a web page using Internet Explorer, Firefox or Site Inspector's browser, you will find a wealth of analysis functions in the toolbars and menus.

An extensive selection of tools that are available online (e.g. "CSS/HTML validation", "link checking", "ping the server", "traceroute the server", "show domain owner", "W3C markup validation") are also included and can be customized according to requirements.