A rather geeky/technical weblog, est. 2001, by Bramus
Nolan Lawson, on how we might focus too much on JavaScript bundle size: Performance is a multi-faceted thing. It would be great if we could reduce it down to a single metric such as bundle size, but if you really want to cover all the bases, there are a lot of different angles to consider. …
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React.memo()
Dan Abramov shares 2 techniques to try before resorting to optimize with React.memo() In this post, I want to share two different techniques. They’re surprisingly basic, which is why people rarely realize they improve rendering performance. These techniques are complementary to what you already know! They don’t replace memo or useMemo, but they’re often good …
Dzhavat ran into an interesting performance issue where practically his whole site would repaint when a transition in the header was triggered. The element being animated is a span wrapping some text placed inside an h1. The h1 itself is in the upper left corner on the page and contains my name. Initially, only the …
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Simon Hearne, who has been keeping a closer eye on unexpected layout shifts ever since Core Web Vitals came into play: One common cause of layout shift is surprisingly difficult to resolve though: flashes of unstyled text (FOUT). In this post we will explore the surprisingly complex world of text rendering on the web and …
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Interesting real-world case-study over at Smashing Magazine: In this article, we’ll take a close look at some of the changes we made on this very site — running on JAMStack with React — to optimize the web performance and improve the Core Web Vitals metrics. With some of the mistakes we’ve made, and some of …
content-visiblity: auto; vs. jumpy scrollbars, a solution
As warned in content-visibility: the new CSS property that boosts your rendering performance you need to be careful with applying content-visibility: auto; on each and every element as the scrollbar might get jumpy. This is because elements will be rendered as they scroll into the viewport and will be hidden as they scroll out of …
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useRef to Fix React Performance Issues
Sidney Alcantara who works on Firetable, a product which features a data grid and an adjacent side drawer. When clicking a cell in the table, the side drawer opens with info about the current cell. Initially they lifted up the state, but that caused performance issues: The problem was whenever the user selected a cell …
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Few tips by Jake Archibald — as presented at #ChromeDevSummit — on how you can use some of the new and upcoming web features to improve the performance of your page. Covered are the aforementioned content-visibility, Font metric override descriptors, the Back/Forward Cache, Portals, and Preloading
Handy website by Harry Roberts and Ryan Townsend to mimic slow loading CSS or JS files. Basic params to tweak are the type and delay ones. The resulting HTTP Status Code (status) and max-age can also be tweaked. Slowfil.es →
httpstat visualizes curl(1) statistics in a way of beauty and clarity. It is a single file🌟 Python script that has no dependency👏 and is compatible with Python 3🍻. Installation through PiP or HomeBrew: pip install httpstat brew install httpstat Once installed through one of those, you can directly call httpstat: httpstat https://www.bram.us/ httpstat – curl …