prerender.conf

location / {
    expires -1;
    try_files $uri @prerender;
}



location @prerender {
    proxy_set_header X-Prerender-Token YOURTOKEN;

    set $prerender 0;

    if ($http_user_agent ~* "baiduspider|twitterbot|facebookexternalhit|rogerbot|linkedinbot|embedly|quora link preview|showyoubot|outbrain|pinterest|slackbot|vkShare|W3C_Validator") {
      set $prerender 1;
    }

    if ($args ~ "_escaped_fragment_") {
      set $prerender 1;
    }

    if ($http_user_agent ~ "Prerender") {
      set $prerender 0;
    }

    if ($uri ~ "\.(js|css|xml|less|png|jpg|jpeg|gif|pdf|doc|txt|ico|rss|zip|mp3|rar|exe|wmv|doc|avi|ppt|mpg|mpeg|tif|wav|mov|psd|ai|xls|mp4|m4a|swf|dat|dmg|iso|flv|m4v|torrent|ttf|woff)") {
      set $prerender 0;
    }

    # Resolve using Google's DNS server to force DNS resolution
    # and prevent caching of IPs
    resolver 8.8.8.8;

    if ($prerender = 1) {
      # Setting prerender as a variable forces DNS resolution since nginx caches
      # IPs and doesnt play well with load balancing
      set $prerender "service.prerender.io";
      rewrite .* /$scheme://$host$request_uri? break;
      proxy_pass http://$prerender;
    }

    if ($prerender = 0) {
      rewrite .* /index.html break;
    }
  }