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-Pagespeed301,254
Percentage of websites that use X-Mod-Pagespeed header0.30%
Total discovered header values197
Header uses directivesNo
Header values are unique or randomNo
Most popular in the country US

X-Mod-Pagespeed Directives

X-Mod-Pagespeed directives value information and usage statistics

DirectiveShareWebsites countUnique Values

Connected technologies

Technologies that utilize the header

Google PageSpeed, category Performance, total 336,843 websites

Distribution by websites popularity

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

Top 10k sites15 websites
Top 100k sites311 websites
Top 1m sites4,251 websites

Websites utilizing X-Mod-Pagespeed

List of websites that use X-Mod-Pagespeed header

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Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common X-Mod-Pagespeed header values

Header valueValue prevalence
Powered By mod_pagespeed4.30%
Powered By pagespeed1.00%
Powered By KingHost and mod_pagespeed0.55%
Powered By ProfesionalHosting0.22%
Adapted For SharkSpeed0.21%
Lightning fast by default0.11%