google.nginxconf

proxy_set_header Accept-Encoding "";
proxy_set_header X-Forwarded-For $remote_addr;
 
subs_filter_types text/javascript application/javascript text/css;
subs_filter "https://www.gstatic.com/recaptcha" "https://your-domain/google/recaptcha/static";
subs_filter "https://www.google.com/recaptcha" "https://your-domain/google/recaptcha/endpoint";
subs_filter "https://apis.google.com" "https://your-domain/google/api";
subs_filter "//fonts.gstatic.com" "//your-domain/google/fonts";
subs_filter "google\.com" "your-root-domain\.com";

site.nginxconf

	location = /recaptcha/api.js {
		return 301 https://$server_name/google$request_uri;
	}

	location /google/fonts/ {
		proxy_set_header   Host fonts.gstatic.com;
		proxy_pass         https://fonts.gstatic.com/;
	}

	location = /google/fonts/css {
		proxy_set_header   Host            fonts.googleapis.com;
		proxy_pass         https://fonts.googleapis.com/css;
		include google.conf;
	}

	location = /google/recaptcha/api.js {
		proxy_set_header Host www.google.com;
		proxy_pass https://www.google.com/recaptcha/api.js;
		include google.conf;
	}


	location /google/recaptcha/static/ {
		proxy_set_header Host www.gstatic.com;
		proxy_pass https://www.gstatic.com/recaptcha/;
		include google.conf;
	}

	location /google/recaptcha/endpoint/ {
		proxy_set_header Host www.google.com;
		proxy_pass https://www.google.com/recaptcha/;
		include google.conf;
	}

	location /recaptcha/ {
		proxy_set_header Host www.google.com;
		proxy_pass https://www.google.com/recaptcha/;
		include google.conf;
	}

	location /google/api/ {
		proxy_set_header Host apis.google.com;
		proxy_pass https://apis.google.com/;
		include google.conf;
	}