HTTP response header

X-UA-COMPATIBLE indicates that page could be authored to a specific version of a browser

Header usage statistics

X-UA-Compatible response header information and usage statistics.

Websites using header X-UA-Compatible 390,126
Percentage of websites that use X-UA-Compatible header 3.64%
Total discovered header values 299
Header uses directives No
Header values are unique or random No
Most popular in the country United States of America

Connected technologies

Technologies that utilize the header

X-UA-Compatible, category Document Standards, total 2,517,075 websites

Distribution by websites popularity

X-UA-Compatible detection in the top websites by popularity

Top 10k sites 923 websites
Top 100k sites 5,222 websites
Top 1m sites 44,927 websites

Websites utilizing X-UA-Compatible

List of websites that use X-UA-Compatible header

Domain Country Rank Contacts
www.pinterest.com United States of America 13
play.google.com United States of America 19
www.amazon.com United States of America 21
vimeo.com United States of America 26
www.microsoft.com United States of America 54
eventbrite.com United States of America 60
See full domain list
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Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common X-UA-Compatible header values

Header value Value prevalence
IE=edge 52.99%
IE=edge,chrome=1 43.36%
IE=EmulateIE7 0.92%
IE=10 0.73%
chrome=1 0.35%
IE=7 0.18%
IE=9 0.17%
IE=Edge, chrome=1 0.15%
IE=EmulateIE8 0.12%
IE=edge,chrome=IE8 0.10%
IE=edge,chrome=IE7 0.08%
IE=8 0.07%
IE=edge,chome=1 0.07%
IE=EmulateIE10 0.06%
IE=EmulateIE9 0.06%
IE=11 0.05%
IE=edge,chrome=1,requiresActiveX=true 0.05%
IE=8; IE=9; IE=10 0.04%
IE=8; IE=9; IE=EDGE 0.03%
IE=9; IE=8; IE=7; IE=EDGE 0.02%