Separate names with a comma.
Discussion in 'Centmin Mod Insights' started by RoldanLT, Sep 8, 2014.
On Gtmetrix, I got this advice:
if it's related to 3rd party content you can't
and for some local content, if you have ngx_pagespeed enabled it will remove that header for some reason.
This is my local content:
Don't know why doesn't have that header.
run GTmetrix a few times, ngx_pagespeed will usually take care of your local static files for such after a few runs AFAIK