Performance

A post by Zach Leatherman (zachleat)

Images are a central part of the web. Beautiful imagery draws customers deeper into the story that your webpage is attempting to tell – whether it is news, entertainment, or e-commerce. And as important as images are – the (potentially) large size of images can hurt the load time of the same pages, leading to customer abandonment. In fact, the HTTP Archive shows that the average mobile website is ~50% images (in KB): This percentage has held relatively constant for a number of years, but at...

What headers to enable, how resource lifecycle looks, and more

A detailed breakdown of how best to optimize images for the web, a new tool to test a webpage's image performance, and explanation of how Cloudflare Images can help to improve your website's image experience.

WebPageTest waterfall charts are a very powerful web performance tool, but can sometimes be a little confusing. Maybe this post can change that.

Builder.io is excited to announce that our homepage now achieves a 100/100 score on PageSpeed Insights even on mobile, since we adopted Qwik.

Having worked primarily on website performance, the chance to work on Readle's native mobile apps was a new challenge. Here's how we improved app speed and delivered greater user satisfaction.

Responsive Images as a Service

Headless Chromium-based web performance metrics collector and monitoring tool - macbre/phantomas: Headless Chromium-based web performance metrics collector and monitoring tool

Is your website mobile ready? mobiReady, a DeviceAtlas Limited product.

Let’s make 2021... fast! An annual front-end performance checklist, with everything you need to know to create fast experiences on the web today, from metrics to tooling and CSS/JavaScript techniques.

In this post I'll outline 8 image loading optimization techniques to minimize both the bandwidth used for loading images on the web and the...

Ensuring your site loads quickly is important. The subject touches almost every part of web design and development, from your choice of images to the performance of your web server. In this guide we bring together information that can help you build a fast site, and keep it fast.

Here's how I approach reducing the impact that 3rd-party tags can have on site speed

Some big brands have a slow page load speed, but they still rank well on Google. So does web performance even matter?

In this article, we’ll take a close look at some of the changes we made on this very site — running on JAMStack with React — to optimize the web performance and improve the Core Web Vitals metrics. With some of the mistakes we’ve made, and some of the unexpected changes that helped boost all the metrics across the board.

Learn how Lighthouse generates the overall Performance score for your page.

Adding video to your application can increase customer engagement and satisfaction. But the exact opposite can occur when there are issues with the video playback: video stalls are frustrating and drive customers away. In this article, we’ll walk through the steps to optimize the video on your website to ensure fast playback and reduce stalls.

There’s an old story about a drunk trying to find his keys in the streetlight. Why? Well, because that’s where it’s the brightest. It’s a funny story, but also relatable, be…

If you're just getting started with performance budgets � or if you've been using them for a while and want to validate your work � this post is for you.

Uni-Médias édite parents.fr, santemagazine.fr, dossierfamilial.com. Depuis l'audit de Fasterize, les sites sont plus rapides. Mustapha Omar, CTO, témoigne

Learn the most common speed issues caused by CSS and how to avoid them.

Can you make a webpage which gets 100 score in Lighthouse and passes all the Core Web Vitals and still feels slow?

Are Core Web Vitals the panacea that everyone thinks it is? I'm not so sure.

Learn how to optimise and track speed to increase search ranking.

How do we get media performance right while staying within performance budgets? Let’s take a look at the recent stats and data around performance budgets, video playback performance issues and some techniques and tools to address these issues.

This post explains how to reduce the size of the WebFonts that you use on your site, so that good typography doesn't mean a slow site.

An online lecture course by Scott Jehl.