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
Optimizing CLS and LCP on chloe.com
In this article we explain how we at YOOX NET-A-PORTER optimized the Chloé website for a couple of Core Web Vitals: Largest Contentful Paint (LCP) and Cumulative Layout Shift (CLS). Web vitalsWeb Vitals is an initiative by Google to provide unified guidance for quality signals that are essential to delivering a great user experience on the web. Core Web VitalsCore Web Vitals are the subset of Web
Core Web Vitals workflows with Google tools | Articles | web.dev
Core Web Vitals workflows with Google tools Stay organized with collections Save and categorize content based on your preferences. Combine Google tools to audit, improve and monitor your website effectively. Core Web Vitals are a set of metrics that assess the user experience on criteria such as load performance, responsiveness to user input, and layout stability. A workflow for improving Core Web
Optimize Largest Contentful Paint | Articles | web.dev
Note that these time breakdowns are guidelines, not strict rules. If the LCP times on your pages are consistently within 2.5 seconds, then it doesn't really matter what the relative proportions are. But if you're spending a lot of unnecessary time in either of the "delay" portions, then it will be very difficult to constantly hit the 2.5 second target. A good way to think about the breakdown of LC
Flutter - Build apps for any screen
Flutter transforms the development process. Build, test, and deploy beautiful mobile, web, desktop, and embedded experiences from a single codebase. Get started Flutter is an open source framework by Google for building beautiful, natively compiled, multi-platform applications from a single codebase. Fast Productive Flexible Fast Flutter code compiles to ARM or Intel machine code as well as JavaSc
SVG Stacks
Image sprites are wildly used for downloading lots of icons or UI elements all at once with just a single HTTP-Request. But they are somewhat cumbersome to use because you have to calculate the background-position offsets. You can’t easily add, remove or reorder them without recalculating. Or change the size without a neighbour peeking in from the side. How could it be solved? Well, by stacking th
WebPagetest - Website Performance and Optimization Test
Test. Experiment. Improve! WebPageTest. The gold standard in web performance testing. Lightning-Fast Web Performance Online CourseLearn to analyze performance, fix issues, and deliver fast websites from the start. Free! Start Course Now >> Introducing Carbon Control Experimental New in WebPageTest! Measure your site's carbon footprint and run No-Code Experiments to find ways to improve.
Critical Path CSS Generator - by Jonas Ohlsson
1. URL to web page to create critical CSS for 3. Create Critical Path CSS 2. Full CSS To extract Critical CSS from. Can be minified. Select All Clear /*Insert your CSS here*/ body { color: #202020; } .someNonCriticalSelectorForThisUrl { color: red; } characters Auto fetch css in improved service: criticalcss.com. What is this Critical Path you're talking about? The critical path is the path to ren
SVGOMG - SVGO's Missing GUI
Global settings Show original Compare gzipped Prettify markup Multipass Number precision Transform precision Features Remove doctype Remove XML instructions Remove comments Remove <metadata> Remove xmlns Remove editor data Clean up attribute whitespace Merge styles Inline styles Minify styles Style to attributes Clean up IDs Remove raster images Remove unused defs Round/rewrite numbers Round/rewri
ウェブ・フォントの読み込み - Weblog - Hail2u.net
ウェブ・フォントも完全に行き渡り、今はどう効率的に配信するかについて多くの時間を割くようになった。Google Fontsの低め安定路線を見限り、TypeKitやFonts.comへ鞍替えする人々も増えた。それと同時に自前でホスティングする人々も徐々にその数を増やしており、どれが最適解なのか一応の結論が出るにはもう少しかかるだろう。まず、ウェブ・フォントの読み込みにおいてどのようなアプローチがあり、どのようなメリット、そしてデメリットがあるのだろうか。 TypeKit等に頼るにしろ、自前でホスティングするにしろ、もちろん最終的にはウェブ・フォントをブラウザーに送りつける必要がある。読み込みとはまさにその部分の話だ。話がややこしくなるので、多様な実装を意識した安全な書き方などについては触れない。 普通に@font-face定義を利用 @font-face定義をただ普通に書く場合のメリットは、
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https://thinkwithgoogle.com/features/mobile
GitHub - edent/SuperTinyIcons: Under 1KB each! Super Tiny Icons are miniscule SVG versions of your favourite website and app logos
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AMP - a web component framework to easily create user-first web experiences
GitHub - google/guetzli: Perceptual JPEG encoder
GitHub - filamentgroup/criticalCSS: Finds the Above the Fold CSS for your page, and outputs it into a file
GitHub - addyosmani/critical: Extract & Inline Critical-path CSS in HTML pages
GitHub - pocketjoso/penthouse: Generate critical css for your web pages
PageSpeed Insights
CSS minification benchmark results