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This is Success: Why 1000/100/6/50ms?
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GitHub - w3c/longtasks: Long Task API
As the page is loading and while the user is interacting with the page afterwards, both the application and browser queue various events that are then executed by the browser -- e.g. the user agent schedules input events based on user’s activity, the application schedules callbacks for requestAnimationFrame and other callbacks etc. Once in the queue, these events are then dequeued one-by-one by th
Performance best practices for Firefox front-end engineers — Firefox Source Docs documentation
Overview A Glossary of Common Terms A Quick Guide to Mozilla Applications Getting Started Getting Set Up To Work On The Firefox Codebase Working On Firefox Working on Firefox Bug Handling Firefox User Guide Firefox DevTools User Docs Source Code Documentation Governance Firefox Front-end DOM Editor Style system (CSS) & Layout Graphics Processes, Threads and IPC Firefox DevTools Contributor Docs To
2017-04-17のJS: prettier 1.0、MSEdge 15、Twitter Liteのパフォーマンスチューニング
JSer.info #327 - JavaScriptの整形ツールであるprettier 1.0がリリースされました。 Releasing Prettier 1.0 Go言語のgofmtやReasonのrefmtのようなコード整形ツールです。 prettierは言語側が提供するツールではないのであくまでopinionatedな整形にすることで設定項目を少なくしています。1.0では利用者でも意見が割れやすいセミコロンやタブ/スペースなどについてはオプションが追加されています。 (それでもオプションは10個以下なのでかなり少ないです。) JavaScriptは利用者によって書き方が異なることについては、JavaScriptの作者である@BrendanEichが次のように書いてたりもします。 JavaScriptは、癖をゆるさないとか制限がきついなどとは、まるで反対の立場だ。だから、効果的な(e
Optimizations in Syntax Highlighting, a Visual Studio Code Story
Version 1.95 is now available! Read about the new features and fixes from October. February 8, 2017 - Alexandru Dima Visual Studio Code version 1.9 includes a cool performance improvement that we've been working on and I wanted to tell its story. TL;DR TextMate themes will look more like their authors intended in VS Code 1.9, while being rendered faster and with less memory consumption. Syntax Hig
JavaScript Start-up Performance – Dev Channel – Medium
Update: The Cost Of JavaScript In 2019 is now available to read. As web developers, we know how easy it is to end up with web page bloat. But loading a webpage is much more than shipping bytes down the wire. Once the browser has downloaded our page’s scripts it then has to parse, interpret & run them. In this post, we’ll dive into this phase for JavaScript, why it might be slowing down your app’s
Building Fast and Performant Apps.
Learnings and Experiences we had making Housing Go
Aerotwist - 🌟 When everything's important, nothing is! 🌟
10 December 2016 Do libraries and frameworks prioritize components on boot? If so, how, and if not what can we do? And, in exploring that question, I discovered that Server-Side Rendering isn't a silver bullet! 17 min Read Time #performance #loading Share Update 2016-12-12: Some folks aren't happy with the SSR'd code in the test, because it wasn't generated the idiomatic way. Firstly, I'm more tha
You don't need a framework for that
Estelle Weyl (@estellevw) started her professional life in architecture and then managed teen health programs. In 2000, Estelle took the natural step of becoming a web standardista. She currently writes for MDN Developer Network and organizes #PerfMatters Conference. She has consulted for Kodak Gallery, SurveyMonkey, Samsung, Yahoo, Visa, and Apple, among others. Estelle shares esoteric tidbits le
Building a better web with Lighthouse | Blog | Chrome for Developers
Since Google I/O, we've been hard at work making Lighthouse an awesome companion for building great Progressive Web Apps: Welcomed 50 new contributors to the project Shipped 15 releases Added ~20 additional audit tests (~50 total) Today, we're happy to announce the 1.3 release of Lighthouse. Lighthouse 1.3 includes a bunch of big new features, audits, and the usual bug fixes. You can install it fr
Prefer DEFER Over ASYNC
Steve works at SpeedCurve on the interplay between performance and design. He previously served as Google's Head Performance Engineer, Chief Performance Yahoo!, and Chief Performance Officer at Fastly. Steve has pioneered much of the work in the world of web performance. He is the author of High Performance Web Sites and Even Faster Web Sites. He is the creator of many performance tools and servic
Progressive Storyboards
Sergey Chernyshev (@sergeyche) is web performance enthusiast, open source hacker and web addict. He organizes New York Web Performance Meetup Group, local community of web performance geeks in New York and helps kick-start local groups about Web Performance around the world. Sergey volunteers his time to run @perfplanet twitter companion to PerfPlanet site. He often speaks on performance-related t
Blur Busters TestUFO Motion Tests. Benchmark for monitors & displays.
For optional HDR support in Chrome/Edge 110+, copy & paste the below chrome://flags URL to enable "Experimental Web Platform Features" and restart browser for HDR: Much better HDR quality occurs with 1500+ nit displays, including newer local dimming LCDs, 240Hz+ OLEDs & MacBook XDR displays. Test your browser WCG & HDR. Try more tests: Eye Tracking Demo | RTS Panning Test | Persistence Demo | Ghos
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What I Learned Benchmarking React - Dominic Gannaway aka @trueadm at @ReactEurope 2017
GitHub - igrigorik/performance-observer
GitHub - deepanjanroy/tti-polyfill: Polyfill for Time to Interactive
More specific if conditions lead to ~10% faster render. by asolove · Pull Request #610 · preactjs/preact
GitHub - iameugenejo/measure-it: Measure performance of code block
GitHub - nolanlawson/marky: High-resolution JavaScript timer based on performance.mark/measure (491 bytes min+gz)
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