Web Performance Recipes With Puppeteer
🕹 Puppeteer is a Node library which provides a high-level API to control headless Chrome or Chromium over the DevTools Protocol. This guide has recipes for automating Web Performance measurement with Puppeteer. An accompanying GitHub repository for this write-up is also available. Get a DevTools performance trace for a page load Puppeteer API: tracing.start() const puppeteer = require('puppeteer'
Prerender pages in Chrome for instant page navigations  | Web Platform  | Chrome for Developers
The Chrome team has brought back full prerendering of future pages that a user is likely to navigate to. A brief history of prerender In the past, Chrome supported the <link rel="prerender" href="/next-page"> resource hint, however it was not broadly supported beyond Chrome, and it wasn't a very expressive API. This legacy prerendering using the link rel=prerender hint was deprecated in favor of N
The 2024 Web Almanac
Web Almanac HTTP Archive’s annual state of the web report Our mission is to combine the raw stats and trends of the HTTP Archive with the expertise of the web community. The Web Almanac is a comprehensive report on the state of the web, backed by real data and trusted web experts. The 2024 edition is comprised of 21 chapters spanning aspects of page content, user experience, publishing, and distri
Field Testing CSS Containment for Web Performance Optimization | Speed Kit
In an earlier analysis of real user data, we found that category or listing pages on e-commerce sites have the worst responsiveness as measured by Interaction to Next Paint (INP). So we asked ourselves: Can we use CSS containment to improve rendering and interactivity? If so, by how much?In this post, we present the results from a series of A/B tests we ran to answer that question. †What is CSS C
Benchmarking the performance of CSS @property  | Articles  | web.dev
Benchmarking the performance of CSS @property Stay organized with collections Save and categorize content based on your preferences. Published: Oct 2, 2024 When starting to use a new CSS feature it's important to understand its impact on the performance of your websites, whether positive or negative. With @property now in Baseline this post explores its performance impact, and things you can do to
I wasted a day on CSS selector performance to make a website load 2ms faster | Trys Mudford
I’ve been doing some performance tinkering at work. It’s written in Next.js and employs judicious use of Server Components to minimise client-side JS. I’m really proud of it. It scores ~90 on Lighthouse mobile, which for Next.js isn’t too bad. Sure, it pains me to see the tiny amount of client-side interaction resulting in such a large bundle, but it’s the price we pay for developer convenience, a
The Two Lines of CSS That Tanked Performance (120fps to 40fps)
The Two Lines of CSS That Tanked Performance (120fps to 40fps) First published: 22/08/2024 I recently released Learn WCs. If you’ve seen it, you’ve likely noticed the animation in the background, where the coloured circles move diagonally across the screen. It looks like this: It works nicely on Chrome and Safari, but I noticed a severe drop in performance on Firefox. You might not be able to see
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Website Speed Test
Fabulous Font-Face Fallbacks
Preloading fonts for web performance with link rel="preload" - HTMHell
The curious (performance) case of CSS @import
What is an AnimationFrame and what can it tell you?
Build Your Own Site Speed Testing Tool with Puppeteer
Unattributed Navigation Overhead (UNO)
The Evolution of Instant Web: What It Means for Performance Tooling
How to improve your page load time with browser caching | DebugBear
Soundtrace
GitHub - GoogleChromeLabs/css-selector-benchmark: CSS Selector Benchmarks, using PerfTestRunner and Puppeteer
CrUX Vis
Keeping Pixely Images Pixely (and Performant!) – Frontend Masters Boost
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