Page speed has become important because Google is now taking it as a factor in how high up your web site lists in search results. 80% of the time taken to download a page is taken up on the visitors browser, not the server.

What is Page speed?

Page speed is a measurement of how fast your web page downloads in a browser. It is calculated using over 20 different criteria. Both Google and Yahoo! have their own page speed tools for measuring web sites. Of course it is also very important for your visitors to view fast pages. No one will hang around a web site with a slow downloading web page.

How do I improve my Page speed?

There are many ways you can improve the speed of your web pages. Some are easier than others to implement. Here a few ways:

  • All JavaScript and CSS files should be combined and packed.
  • Images should be compressed.
  • Images must have dimensions so that the browser does not have to ‘re-paint’ the window.
  • Sprites (combined image groupings) should be used for many small images to prevent multiple HTTP requests.
  • PNG graphics should be used not GIFs, as they compress more efficiently.
  • Caching should be enabled on your server and browser.
  • Asynchronous resources should be used.
  • Downloads should be parallelised across hostnames.
  • Static resources should be served from a cookieless domain.
  • And many others …