YSlow analyzes web pages and why they’re slow based on Yahoo!’s rules for high performance web sites.
As YSlow is Open Source, there’s every chance it could outlive Yahoo! itself!
Using speed analysis tools like GTmetrix, or your own browser based tools, one can generally see YSlow and Google PageSpeed are the two defacto standards when it comes to objectively measuring pageload times.
It should be noted, however, that this score is a guide, and actual speed is a more important consideration. Sometimes the fastest setup delivers a slightly lower “score” – and this should be borne in mind when performing page speed tests.
Also, you might score 100 on Yslow, and have a site which takes 5 seconds to load. In such cases, a “worse” score on a site which takes 1 second to load would be better. Best would be a fast site which has a good score – the score means it is (close to) optimal, and you aren’t wasting resources, for example, loading images which are larger than they need to be, or failing to browser cache resources which do not change.
If you’d prefer to benefit from the expertise at Silicon Dales and get a specialist developer to boost your score in YSlow, then check out the services here:
Silicon Dales provides comprehensive speed optimization services for WordPress sites and also WooCommerce specific optimization, the result of which will very often be improved Yslow load times.
Contact Silicon Dales today in order to discuss making your website blazing fast, including if you got a bad or middling score in a performance test online or in your browser.
Ever checked your website speed using GTmetrix, Pingdom, PageSpeed or Yslow… or any of the other many and various latest and greatest speed checking tools? ***2021 update: take a look at Lighthouse Well, if you have, you might have come across a request to “leverage browser caching…” or similar. What does “Leverage Browser Caching” actually …
