X-UA-Compatible

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 2,343,324
Percentage of websites that use X-UA-Compatible header 2.37%
Total discovered header values 707
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 21,725,789 websites

Distribution by websites popularity

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

Top 10k sites 818 websites
Top 100k sites 8,032 websites
Top 1m sites 66,429 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 32
polyfill.io United States of America 39
support.cloudflare.com United States of America 45
play.google.com United States of America 47
vimeo.com United States of America 67
policies.google.com United States of America 70
See full domain list
Flat price per the report, subscription is not required.

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 65.35%
IE=edge,chrome=1 36.58%
IE=EmulateIE7 0.74%
IE=10 0.61%
chrome=1 0.52%
IE=EmulateIE8 0.36%
IE=9 0.20%
IE=7 0.15%
IE=Edge, chrome=1 0.14%
IE=8; IE=9; IE=10 0.10%
IE=EmulateIE9 0.10%
IE=8 0.10%
IE=edge,chrome=0 0.09%
IE=EmulateIE10 0.06%
IE=edge,chrome=IE7 0.06%
IE=edge,chrome=IE8 0.06%
IE=11 0.04%
IE=8; IE=9; IE=EDGE 0.04%
"IE=11,IE=10,IE=9,IE=8" 0.03%
IE=100 0.03%