YSlow for analyzing your web site

In the Problem with WebSphere Portal performance entry i talked about how browser is spending most of the time in getting HTML from portal but major portion of time is spent in downloading and executing other resources.

So i started thinking about what i can do to make the portal site browser friendly (So that my pages render fast). It seems that Google and Yahoo has done lot of research on how to improve web site performance.

Yahoo has created a YSlow tool that we can use to analyze the performance of web page, they have following set of rules that they apply to web page to figure out if its browser friendly and based of the rules it gives us suggestion on what can be done to improve performance of the page

  1. Minimize HTTP Requests

  2. Use a Content Delivery Network

  3. Add an Expires or a Cache-Control Header

  4. Gzip Components

  5. Put StyleSheets at the Top

  6. Put Scripts at the Bottom

  7. Avoid CSS Expressions

  8. Make JavaScript and CSS External

  9. Reduce DNS Lookups

  10. Minify JavaScript and CSS

  11. Avoid Redirects

  12. Remove Duplicate Scripts

  13. Configure ETags

  14. Make AJAX Cacheable

  15. Use GET for AJAX Requests

  16. Reduce the Number of DOM Elements

  17. No 404s

  18. Reduce Cookie Size

  19. Use Cookie-Free Domains for Components

  20. Avoid Filters

  21. Do Not Scale Images in HTML

  22. Make favicon.ico Small and Cacheable

When i did YSlow analysis of the portal page with default IBM theme and no portlets i got quite a few suggestions on what i can do to improve performance. I am planning to make these changes and see how it helps.


Anonymous said...

hello... hapi blogging... have a nice day! just visiting here....

srjwebsolutions said...

We are leading responsive website designing and development company in Noida.
We are offering mobile friendly responsive website designing, website development, e-commerce website, seo service and sem services in Noida.

Responsive Website Designing Company in Noida
Website Designing Company in Noida
SEO Services in Noida
SMO Services in Noida

Vikas Chaudhary said...

Battery Mantra is Authorized exide car battery dealer in Noida and Greater Noida. We are providing our service in Indirapuram, Delhi, Ashok Nagar.

Exide Battery Dealer in Noida
Battery Dealer in Noida
Authorized Battery Dealer in Noida
Car Battery Dealer in Noida
Car Battery Dealer
Exide Battery Dealer

EG MEDI said...

Egmedi.com is online medical store pharmacy in laxmi nagar Delhi. You can Order prescription/OTC medicines online.
Cash on Delivery available. Free Home Delivery

Online Pharmacy in Delhi
Buy Online medicine in Delhi
Online Pharmacy in laxmi nagar
Buy Online medicine in laxmi nagar
Onine Medical Store in Delhi
Online Medical store in laxmi nagar
Online medicine store in delhi
online medicine store in laxmi nagar
Purchase Medicine Online
Online Pharmacy India
Online Medical Store