Responsive theme development to fit your website screen with number of devices.
Our hire Drupal developers combine files into a single style sheet, which can be a challenging task as scripts and stylesheets are different from one page to the other or from module to module in Drupal .
Employ image maps, which essentially involve compressing several images into one composite image. This strategy will also reduce the number of HTTP request, which in turn would improve the response time of a page.
Remove all unwanted modules and indexing database properly to reduce the server load and enhance website performance.