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🕹 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'
New to the world of web performance? Welcome! Here's everything you need to know to master website monitoring, analytics, and diagnostics. Learn how to deliver a fast, joyous experience to all your users. Business Success Making your pages faster isn't just for the web performance geeks in your organization. Site speed affects every business metric you care about – from bounce rate to conversions
I recently gave a talk on “Making Sense of Performance Metrics” at the Web Unleashed Conference, and it was suggested that I turn the breakdown of all the performance metrics into a cheatsheet; so here it is! The full cheatsheet, including a downloadable PDF version, are at the bottom of the page so feel free to skip to that. Four Questions # In a web.dev article on "User-centric Performance Metri
Web Performance: 11 Must-Read Tips to Give Your Site a Speed Boost - Shopify
Earn more revenue as a Shopify Partner Grow your Shopify expertise and unlock new ways to earn revenue for your own business with the Shopify Partner Program. Become a Partner We can add more features to our websites and have more tools and technologies at our disposal than ever before. The downside, however, is that our choices can significantly slow down our sites, much to the frustration of cus
by Alistair Shepherd published on Dec 14, 2023 Carefully observing websites in the wild As the murderous tortoises start to converge on Ryūji’s hideout, they pull out their phone. It’s a cheap, older device but it’s survived the toils of the tortoise-ageddon well so far. Thankfully the internet still exists, although a bit slower, so they’re able to search online for how to scare tortoises away. T
GitHub - GoogleChromeLabs/AutoWebPerf: AutoWebPerf provides a flexible and scalable framework for running web performance audits with arbitrary audit tools including PageSpeedInsights, WebPageTest and more.
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Less is moreDevice displays run at a certain number of frames per second. Browsers try to match this rate for a smooth user experience. To output a new frame to the display, the browser must first complete its ‘rendering cycle’ or ‘pixel pipeline’. The majority of devices run at 60 FPS. This allows for around a 16ms window to complete the rendering cycle, per frame. Increased FPS means even smalle
![Frontend Web Performance: The Essentials [0]](https://cdn-ak-scissors.b.st-hatena.com/image/square/f4ebca80380c1e7c1598570f23b6d7a83d581a33/height=288;version=1;width=512/https%3A%2F%2Fmiro.medium.com%2Fv2%2Fresize%3Afit%3A963%2F1%2ABK3PHVbfaONNdaqvy0mEDQ.png)
JSer.info #621 - Electron 22.0.0がリリースされました。 Electron 22.0.0 | Electron Chromium 108、Node.js 16.17.1、V8 10.8へのアップデート、UtilityProcessモジュールの追加、new-windowイベントの非推奨化などの変更が含まれています。 また、Chromium 109でWindows 7/8/8.1のサポートが終了するため、Electronもこれに合わせるようです。 そのため、Windows 7/8/8.1をサポートする最後のElectronバージョンとなります。 Sunsetting support for Windows 7 / 8/8.1 in early 2023 - Google Chrome Community 今週はウェブパフォーマンスやJavaScriptのパフォーマ
GitHub - Zizzamia/perfume.js: Web performance library for measuring all performance vitals metrics
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Real-time message processing, storage, and distribution
Cloudflare AnalyticsComprehensive web performance and security analytics Cloudflare tracks and analyzes web performance and security metrics across all of your domains, without impacting site speed or end-user experience.
There's so many ways to speed up your site. Don't you wish every web performance tip was in one place? That's what I thought too, so I put them all in one place: this post. Use this guide as a reference. Table Of Contents HTML CSS Images Fonts JavaScript Server Testing Tools Frameworks HTML ✨ Minify HTML ☄️ Order your styles and scripts for pagespeed ⚡️ Eliminate render-blocking resources 🌟 Minim
My Challenge to the Web Performance Community — Philip Walton
I have noticed a trend in recent years—a trend that I’ve admittedly been part of myself—where performance-minded developers will rebuild a site and then post a screenshot of their Lighthouse score on social media to show off how fast it is. What might come as a surprise to many of the people reading this post is that I kinda want this trend to stop—or at least, I want it to change. Now, let me be
Building a simple interface for logging web performance metrics
Building a simple interface for logging web performance metrics I've started using Perfume.js on this site to capture web performance metrics including Core Web Vitals. As part of this, I wanted to create a flexible logging tool that would help me send this data to my Supabase backend but also handle logging any other performance data in the future, and heck, handle anything I might want to log! T
Vital Web Performance
I hate slow websites. They are annoying to use and frustrating to work on. But what does it mean to be “slow”? It used to be waiting for document load. Then waiting for page ready. But with so many asynchronous patterns in use today, how do we even define what “slow” is? The W3C has been working on this with the new Event Timing and Element Timing API, and has defined some new Web Vital metrics to
12 Sep How to write about web performance Posted September 12, 2021 by Nolan Lawson in performance, Web. Tagged: performance. 3 Comments I’ve been writing about performance for a long time. I like to think I’ve gotten pretty good at it, but sometimes I look back on my older blog posts and cringe at the mistakes I made. This post is an attempt to distill some of what I’ve learned over the years to
Introducing historical web performance data via the CrUX History API - Chrome Developers
Introducing historical web performance data via the CrUX History API Published on Tuesday, February 7, 2023 This article introduces the Chrome UX Report (CrUX) History API endpoint, which provides time series of web performance data. This data updates weekly, and allows you to see about 6 months worth of history, with 25 data points spaced out by a week. When used with the daily updates from the o
リアル事例から読み解くWebパフォーマンスチューニングの勘所/Offers web performance tuning
https://offers.connpass.com/event/304025/ 発表資料です
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Web Performance Recipes With Puppeteer
Web Performance Guide | SpeedCurve
Web Performance Metrics Cheatsheet | bitsofcode
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Frontend Web Performance: The Essentials [0]
2022-12-07のJS: Electron 22.0.0、Web PerformanceとJavaScript Performance
HarperDB | Web Performance Platform
Cloudflare Analytics | Web Performance & Security
The Ultimate Guide to Web Performance 🚀
How to write about web performance
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