I had completed my magento website called www.bookslab.in. I want to increase the speed of my website. I had checked my website speed on "tools.pingdom.com" it is coming "4.34s" page load time & Performance grade as: 91. My website speed will increase if i remove this 1 error 1) Serve static content from a cookieless domain I am attaching the screenshot of my website speed details.

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  • did you see the uploaded screenshot @ProxiBlue May 26, 2017 at 10:22

1 Answer 1


Option 1:

Use a cdn to serve static content (js, css and images)

Option 2:

Setup additional CNAME DNS entries:

js.bookslab.in css.bookslab.in images.bookslab.in

or setup a wildcard DNS entry *.bookslab.in

Configure site urls accordingly in admin and set js, css and media urls accordingly ( so dont use {base_url} in the url setups )

system->configuration->web->secure/unsecure urls

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so for example you will have https://js.bookslab.in/js in the js configuration.

For both options 1 and 2:

Now configure your store cookie domain as www.bookslab.in ( important: you will invalidate all current sessions. All active logged in customers will be logged out and active carts will be dropped )

Clear cache

Explanation: Cookies will now only be served fir content served from www.bookslab.in

The js, css and images urls ( or cdn served content ) will not have cookies as they are not valid for the confugured cookie domain.

Bonus: On option 2 you have now also done domain sharding. This will also then allow content to be served parrallel.

Hope that helps

  • I only understand the CNAME DNS entries part. can you explain me how to configure this all thing. Feb 12, 2017 at 17:23
  • Hi. Sure. On my mobile ( at time of answer and now ) will expand when at office in a couple of hours. Go ahead and configure cnames so dns can start propagation
    – ProxiBlue
    Feb 12, 2017 at 21:20
  • @SalmanDalal updated with example
    – ProxiBlue
    Feb 12, 2017 at 22:03
  • Do i have to replace the above urls with the urls have stated above as js.bookslab.in & more Feb 14, 2017 at 1:41
  • so for example you will have https://js.bookslab.in/js in the js configuration.
    – ProxiBlue
    Feb 14, 2017 at 5:19

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