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
Published: May 28, 2020 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 Vitals for your website will be explored in this guide, but where that workflow begins depends on whether you're collecting your own field data. Where it ends may depend on which of G
Optimize Largest Contentful Paint  | Articles  | web.dev
Published: April 30, 2020, Last updated: March 31, 2025 Largest Contentful Paint (LCP) is one of the three Core Web Vitals metrics, and it represents how quickly the main content of a web page is loaded. Specifically, LCP measures the time from when the user initiates loading the page until the largest image or text block is rendered within the viewport. To provide a good user experience, sites sh
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 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 JavaScript, for
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.
SVGOMG - SVGO's Missing GUI for minifying SVGs
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
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Think with Google - Marketing Research, Insights, and Trends
GitHub - edent/SuperTinyIcons: Under 1KB each! Super Tiny Icons are miniscule SVG versions of your favourite website and app logos
Page not found - Siterelic
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
http://jonassebastianohlsson.com/criticalpathcssgenerator/
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
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