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232 questions
Newest Active Bountied Unanswered
1 vote
2 answers
149 views

I'm working with Highcharts and considering enabling styledMode to decouple chart styling from configuration. This would enable using CSS for styling instead of relying on inline styles set with ...
Jouni Kantola's user avatar
  • 1,319
1 vote
1 answer
443 views

I'm trying to improve the Largest Contentful Paint (LCP) on one of my pages. The main LCP element is an image that is loaded dynamically via PHP. I have already compressed the image and the final size ...
Hire4event's user avatar
  • 1
2 votes
0 answers
56 views

I am diagnosing performance issues with my website and I have noticed a specific issue with a CSS selector that slowly matches against many elements. Use dev tools to analyse my site's performance, &...
BurkusCat's user avatar
  • 196
-1 votes
1 answer
146 views

I am trying to address an Interaction to Next Paint (INP) issue on my webpage. Google's reports indicate that the INP on this page is over 300, but when I test the page using tools like DebugBear or ...
John Smith's user avatar
  • 1
-1 votes
1 answer
55 views

I am new to Jmeter and learning as I go on a small project in work, but I think I'm getting confused when it comes to the logging in and out of websites, as well as navigating around areas of a logged ...
Chris Duffy's user avatar
  • 185
2 votes
0 answers
260 views

When an element has a backdrop-filter and has anything animated within it, I see a huge amount of CPU and GPU usage in Chrome. This doesn't make sense to me, because a backdrop-filter only needs to be ...
jameshfisher's user avatar
  • 37.5k
0 votes
1 answer
72 views

I wish to configure my async CSS and early hint setup. I would like to start loading XXX.css as early as possible but giving bandwidth priority to the main HTML (which has inline CSS and inline JS ...
chulinguy's user avatar
  • 31
-2 votes
2 answers
245 views

I was thinking recently about the weights used to produce the final Lighthouse score. If you hop over to https://googlechrome.github.io/lighthouse/scorecalc/ you can see that these are 0.1 : FCP, SI, ...
SlightlyKosumi's user avatar
  • 821
0 votes
0 answers
42 views

I’m working on a ReactJS application and need to measure the exact amount of data transferred over the network for performance monitoring purposes. Specifically, I want to get the transferred size of ...
Ajithkumar Balakrishnan's user avatar
  • 21
1 vote
0 answers
74 views

When I run a webpagetest on a simplified page, where it has only a css file and couple of images (no JS, no iframes etc), then in the waterfall diagram, i can see that the css was loaded at around 1s ...
mbehzad's user avatar
  • 3,908
1 vote
0 answers
255 views

I'm working on optimizing the Interaction to Next Paint (INP) metric i discover there is a hight INP on the page with a summary of anchor links. These anchors allow users to jump to specific sections ...
Hamza's user avatar
  • 11
1 vote
1 answer
166 views

I noticed that Search Console shows and average CLS of almost 0.2 for mobile and the same thing is shown in PageSpeed Insights. When I try to identify the issue running Lighthouse, it shows however 0 ...
M A's user avatar
  • 43
0 votes
1 answer
158 views

In the react website that I built, I have multiple images that keep shuffling in the hero section in a nice animation, as you can see. The problem is that lighthouse, and many other performance metric ...
Alinferno's user avatar
  • 45
3 votes
1 answer
734 views

I have implemented simple proxy server with using node js. So the proxy will send Early hints response once it receives the request, it works well for HTTP/1.1 request but when I try with HTTP/2 ...
Joey Zhang's user avatar
  • 43
1 vote
1 answer
180 views

In web we have PerformanceLongTaskTiming API which represents job units that occupy the UI thread. And we have TBT metric, which measures how long browser had been blocked during page load. But we ...
avdotion's user avatar
  • 137

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