Performance

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.

This article looks at how 1000 popular Chrome extensions impact the performance of the browser.

Analysis and reports on the impact of third party entities on the web as a whole.

Blackfire.io: Continuous Performance Testing

How are Core Web Vitals measured? How do you know your fixes have had the desired effect and when will you see the results in Google Search Console? Let’s figure it out.

This is Jess B Peck's personal website. SEO, Analytics, big data, small data, and the web.

Are you trying to convince your boss to commit to web performance work without much success? We have tips.

Your may not think it, but your 404 page is an important part of your potential user journey. You should test its web performance as it can have a big impact...

This post covers the loading attribute and how it can be used to control the loading of iframes.

RAIL model enables designers and developers to reliably target the performance optimization work that has the highest impact on user experience. Learn what goals and guidelines the RAIL model sets out and which tools you can use to achieve them.