Market Share by Top Websites

1 X-UA-Compatible is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, P3P Policy is clearly lagging behind, losing to X-UA-Compatible in all segments.

Websites Categories

1 X-UA-Compatible has better usage coverage in more websites categories. Including Arts & Entertainment, Business & Industry, People & Society, Shopping and 242 other categories.

2 P3P Policy hasn't got a lead over X-UA-Compatible in any websites category.


1 X-UA-Compatible is leading in most countries, including United States, Russia, Germany, Brazil and 226 other countries.

2 P3P Policy is leading in South Korea, South Georgia Island, Montenegro, Saint Helena and 5 other countries.