category devtools 
Speed Curve
FEBRUARY 25, 2024
Like all Core Web Vitals, INP has a set of thresholds: INP thresholds for Good, Needs Improvement, and Poor Many sites tend to be in the Needs Improvement or Poor categories. These may get populated during testing, but we can clear them at any time via Application > Storage > Clear Site Data in DevTools.
Smashing Magazine
SEPTEMBER 11, 2020
One of the simplest ways to run Lighthouse is through Chrome’s DevTools Lighthouse panel. If you open your site in Chrome and then open Chrome’s DevTools, you should see a “Lighthouse” tab. You can use this object to do a multitude of things, including specifying which Lighthouse test categories you want to test.
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CSS Wizardry
OCTOBER 27, 2018
To combat this, and make performance testing regular and routine, I try to distill the types of testing that we do into three distinct categories: Proactive , Reactive , and Passive. How: DevTools, browsers, local tooling. When something is everyone’s responsibility, it normally becomes no one’s responsibility. Who: Engineers.
Smashing Magazine
OCTOBER 2, 2023
Image Optimization Images are pieces of content in many contexts, and they are a very important and prominent part of the WaterBear app’s experience, from video posters and category banners to partner logos and campaign image assets. After scrolling the video category page, a bunch more images are loaded.
Smashing Magazine
JUNE 2, 2021
width="400" height="400"> You can find the dimensions of the image by opening DevTools and hovering over (or tapping through) the element. Chrome DevTools shows the image dimensions and aspect ratios when hovering over an element. Open DevTools go to the very intimidating (but very useful once you get a hang of it!)
CSS - Tricks
DECEMBER 23, 2020
The easiest way to use it is through the Chrome DevTools panel. Once you open the DevTools, you will see a “Lighthouse” tab. The above configuration asserts a baseline score of 90 for the performance and accessibility categories. The result of any audit in Lighthouse can be asserted so there’s so much you can do here.
Smashing Magazine
OCTOBER 29, 2018
Studying your network waterfall chart in developer tools will show this delay up under the category of “Waiting (TTFB)”. For browser support, the best I’ve seen is in Chrome DevTools, and that’s what I’ve used for the screenshots in this article. Considerations.
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