Lofesa commented on issue #1681: Uncacheable content, preventing rewriting of image URL: https://github.com/apache/incubator-pagespeed-ngx/issues/1681#issuecomment-593837663 Hi Seems you have this: `user -> cloudflare -> pagespeed-> nginx -> pagespeed -> apache` and, I think, you need `user -> cloudflare -> pagespeed -> ngxinx -> apache ` OR `user -> cloudflare -> nginx -> pagespeed -> apache ` I will say, pagespeed must be installed in nginx OR in apache, not in both. For debug purposes, cloudflare is noise, put it on bypass mode or activate the developer mode. Your sub-request don´t have cache-control hader and the main request have 2 cache-control header, but both are uncacheable. Pagespeed, to work, need that resources are public cacheable. If you look at the image, in the blue circles, you can view what I´m saying. The unplugged parameter disables pagespeed.  When you use a proxy, is the proxy that hit the webserver, not the user, so you need to send the user IP and user UA from the proxy to the webserver. My advice is to work, at first place, ony with pagespeed->apache, and when you have all isues solved here, then add nginx, and when you solve issues here, then add cloudflare.
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