./configure --with-http_image_filter_module

location / {
  root   html;
  index  index.html index.htm;

  if ($arg_w = "") {
   set $arg_w '-';
  }
  if ($arg_h = "") {
   set $arg_h '-';
  }
  image_filter resize $arg_w $arg_h;
  image_filter_jpeg_quality 95;
}

访问: 123456.jpeg?w=200&h=200