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The Three Types of Performance Testing

CSS Wizardry

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.

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Measuring Performance With Server Timing

Smashing Magazine

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.

Servers 87
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Debugging Interaction to Next Paint (INP)

Speed Curve

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.

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A Guide To CSS Debugging

Smashing Magazine

In my experience, CSS layout issues often fall out of one of the following categories: Overflow of content from its parent resulting in extra or unexpected scrollbars and content being pushed out of the regular viewport area. Then, you can use DevTools to copy in the relevant HTML. General Debugging Tips. remove or relocate elements.

Design 145
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An Introduction To Running Lighthouse Programmatically

Smashing Magazine

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.

Mobile 116
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WaterBear: Building A Free Platform For Impactful Documentaries (Part 2)

Smashing Magazine

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.

Cache 72
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Let’s Dive Into Cypress For End-to-End Testing

Smashing Magazine

In addition, there is full access to Chrome’s developer tools (DevTools), and clicks are fully recorded. Example: If you want to test the checkout process in an online shop, don’t perform all of the other steps, such as creating the products and categories, even though you will need them to process the checkout. Large preview ).

Testing 135