Expires Headers for SEO: Why You Should Think Twice Before Using Them

Expires Headers for SEO: Why You Should Think Twice Before Using Them - YouMoz

seomoz.org 30 May '12, 6pm

Expires Headers for SEO: Why You Should Think Twice Before Using Them

After Google’s announcement of the impact of site speed on search rankings, many articles were written about the benefits of setting expires headers to control browser caching. However, after researching cache control extensively I found no articles that explain how to determine which resources of a site should be cached- so instead of explaining how to implement them (there are tons of resources out there, like Apache.org ) this article explains what expires headers are and how they benefit SEO, explains the dangers of improper implementation, and offers some insight on preventing issues. What Are Expires Headers and How Do They Benefit SEO? Expires headers tell the browser whether a resource on a website needs to be requested from the source or if it can be fetched from the browser’s cache. When you set an expires header for a resource, such as all jpeg images, the brows...

Full article: http://www.seomoz.org/ugc/expires-headers-for-seo-why-you...

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