[Tin tức] Demystifying Speed Tooling (Google I/O ’19)



This talk will provide strong guidance on how to effectively assess and optimize site performance. In collaboration with the Search Console Team, the session will showcase how to methodically diagnose, benchmark against both lab and field metrics, and monitor your site speed using Google’s tools. A Chrome performance expert will demonstrate live when and how to use various tools at different stages of development, providing analysis and tips along the way.

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Speaker(s): Elizabeth Sweeny, Paul Irish, Amir Rachum

T8D071 event: Google I/O 2019; re_ty: Publish; fullname: Elizabeth Sweeny;

21 bình luận về “[Tin tức] Demystifying Speed Tooling (Google I/O ’19)”

  1. Stating that the site speed is the most important factor for the bounce rate is missing 1 crucial component in your argument. The vast majority of sites load under 3 seconds. Then you also have lazy loading which helps with the illusion of the the site being completely loaded even if it isn't. Does anyone here remember the last time they left a site because it took too long to load (due to the sites performance)? I honestly can say I do not remember a time. Yes, I imagine if it took over 3 seconds for a site to load the first content, people may leave but you can have sites that have extremely poor performance scores with also very slow content completion for the entire page but the first content loads incredibly fast. I find this to be common among a lot of ecommerce sites due to the content that has to be loaded. One caveat I can see here is when you want your content to be available world wide or in areas with low speed internet connection. Then again I imagine they are pretty used to their speed times unfortunately. I am stating this just because I wanted to point out the data being used in this argument. Most of us have sites that we can open and perceive it loading under 3 seconds (even if the actual load time is higher). I think there are far more important things to focus on than getting your site to be as quick as possible. The example of Pinterest is a good one to use because the performance score for their site is still terrible on mobile. The score currently is 27. What was it before these improvements? Their largest content paint is 18 seconds with the speed index being 10. Their first content is nearly 7 seconds. Now as you are reading this open your phone to Pinterest. Did you have an urge to leave the site before it loaded? Now I am sure they have been working hard to help with their bounce rates, because even though lighthouse is ranking this extremely low and scoring the performance low your perception is that the site loaded pretty fast right? THAT IS WHAT MATTERS. The problem I am pointing out is that these tools do a very poor job and understanding this. And the entire point of this discussion is to solve problems right? It just feels like there is more to this than simply "time".

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  2. Any reason why you lie twice about the Lighthouse score being the same on your servers as it is on local computers?
    I mean it's an utter bold faced lie. You said it twice @4:10 and @4:40
    We all know people aren't smart enough to run Lighthouse audits through dev tools themselves, which begs the question, why are you not only lying to developers who know better (target audience of footage), but also REFUSING to fix it — seemingly so as to "force" lower scores on the populous en masse?
    Is this how you usher in a new age of AMP? Using social engineering to make people think their websites are bad? I'm genuinely curious. What say you almighty google? Explain the lie.

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