How To Add Expires Header To Images
Expires header tells browser how to cache a web page component. If a component (image, flash, html etc.) is not going to change for a long time in future –it is highly recommended that you add a far future expires header. In simple words, this means that you tell the browser to cache the component for a long time (several months or may be several years). If you believe that a component is never going to change –you should add never expires header....