How to optimize WordPress site performance?

  • Use a CDN
  • Use a caching plugin or edit .htaccess to cache different file types for different lengths of time and use gzip, etc
  • Use a simple theme/framework
  • Split comments, products and long posts into smaller pages
  • Use less plugins and only use well established ones
  • Keep WordPress updated
  • Host images on a subdomain

  • A separate domain prevents your domain's cookies from being sent for every image request, where they're not needed. Reduces the bandwidth overhead for each request.
  • Most browsers will only make a certain number of HTTP requests at one time to a particular domain, so serving images and other static content off a second domain potentially doubles the number of HTTP requests at one time.
  • You can conceivably use a different, lighter weight webserver like nginx/lighttpd to serve the static content.

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