Recommendations

PageSpeed
YSlow

YSlow: Reduce cookie size

Overview

Keep cookies as small as possible to minimize the HTTP header size.

How does your site score on this recommendation?

Details from Yahoo!

HTTP cookies are used for a variety of reasons such as authentication and personalization. Information about cookies is exchanged in the HTTP headers between web servers and browsers. It's important to keep the size of cookies as low as possible to minimize the impact on the user's response time.

Summary

Cookie
Low
Moderate
99%

YSlow recommends:

For more information check "When the Cookie Crumbles" by Tenni Theurer and Patty Chi. The take-home of this research:

  • Eliminate unnecessary cookies
  • Keep cookie sizes as low as possible to minimize the impact on the user response time
  • Be mindful of setting cookies at the appropriate domain level so other sub-domains are not affected
  • Set an Expires date appropriately. An earlier Expires date or none removes the cookie sooner, improving the user response time

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