The Platform for Privacy Preferences Project (P3P) enables Websites to express their privacy practices in a standard format that can be retrieved automatically and interpreted easily by user agents. P3P user agents will allow users to be in...
Allows a website to define how a page is rendered in Internet Explorer 8, allowing a website to decide to use IE7 style rendering over IE8 rendering.
X-UA-Compatible is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.
In terms of market share, P3P Policy is clearly lagging behind, losing to X-UA-Compatible in all segments.
X-UA-Compatible has better usage coverage in more websites categories. Including Computers Electronics & Technology, Science & Education, Arts & Entertainment, Games and 20 other categories.
P3P Policy hasn't got a lead over X-UA-Compatible in any websites category.
X-UA-Compatible is leading in most countries, including United States, China, Japan, Germany and 162 other countries.
P3P Policy hasn't got a lead over X-UA-Compatible in any country.