HTTP response header

PageSpeed adds a header X-Mod-Pagespeed in Apache and X-Page-Speed in Nginx with the version of PageSpeed being used.

Header usage statistics

X-Mod-Pagespeed response header information and usage statistics.

Websites using header X-Mod-Pagespeed 150,558
Percentage of websites that use X-Mod-Pagespeed header 0.28%
Total discovered header values 165
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

Google PageSpeed, category Cache Tools, total 184,813 websites

Distribution by websites popularity

X-Mod-Pagespeed detection in the top websites by popularity

Top 10k sites 40 websites
Top 100k sites 433 websites
Top 1m sites 4,261 websites

Websites utilizing X-Mod-Pagespeed

List of websites that use X-Mod-Pagespeed header

Domain Country Rank Contacts
www.checkpoint.com United States of America 1,136
oglobo.globo.com Brazil 1,569
www.business-standard.com United States of America 1,969
cen.acs.org United States of America 2,404
www.iris.edu United States of America 2,440
www.overstock.com United States of America 2,724
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-Mod-Pagespeed header values

Header value Value prevalence 69.50% 6.25%
Powered By mod_pagespeed 5.56% 4.26% 3.51% 2.49% 1.69%
Powered By pagespeed 1.10% 0.70% 0.55%
Powered By KingHost and mod_pagespeed 0.53% 0.50%
Adapted For SharkSpeed 0.45%
Powered By ProfesionalHosting 0.43% 0.25%
enabled 0.25% 0.16% 0.15%
Lightning fast by default 0.12% 0.11%