How to yield to the main thread to improve Interaction-to-Next-Paint (INP) and detailed insights into patterns like await-interaction-response, yieldToMain, yieldUnlessUrgent.

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Tickets are ON SALE for CascadiaJS 2026 - https://cascadiajs.com/2026
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A fast paced, animated, and jam packed tik-talk on CSS features from the past ~5 years. CSS has moved so fast, don't…

Exploring progressive image rendering across JPEG, PNG, WebP, AVIF, and JPEG XL.

To celebrate scroll-driven animations finally landing in Safari 26, here are some things you probably want to know before using them. Link to: The anatomy of a scroll driven animation We don’t need the animation-duration property as the animation duration…

Discover the optimal image format for images. I compare JPEG, PNG, WebP, and AVIF in terms of file size, quality, and compression for photos and text images.

The CPU Profiling guide explains how to use Node.js built-in CPU profiling to analyze performance by identifying parts of code that consume the most CPU.

I needed to choose a framework for a mobile-first app at work. I started comparing Next.js, SolidStart, and SvelteKit, then expanded to 10 frameworks. The measurements revealed dramatic differences in bundle sizes, performance, and the real cost of framework…

Understand performance profiles - with the help of AI

Why do fast sites make more money? Because of nobody like a slow website. 14% of your audience will start shopping at another site if your page loads are

T oday’s The Fast and the Curious post explores how Core Web Vitals saved Chrome users more than 10,000 Years of waiting for web pages to lo...

Web Vitals is an initiative by Google to help business owners, marketers and developers alike identify opportunities to improve user exp...

We know that browsers do all sorts of different things under the hood. One of those things is the way they not only *fetch* resources like images and scripts from the server but how they [prioritize those resources](https://www.debugbear.com/blog/request…

There are lots of tips for [improving your website performance](https://www.debugbear.com/blog/improve-website-performance?utm_campaign=sm-10). But even if you follow all of the advice, are you able to maintain an optimized site? And are you targeting the…

Let's cut to the chase, shall we? Updated network test parameters for 2026 are:

There is quite a bit of interesting design possibility with `random()` coming to CSS. It pairs nicely with animation, particularly animation-composition for agumenting those generated values.

A cinematic Git commit replay tool for the terminal, turning your Git history into a living, animated story. - unhappychoice/gitlogue

Despite being so fundamental, caching is one of the most misunderstood aspects of web performance.

Sculpt dynamic interfaces, stretch your imagination, and play with these 22 powerful new CSS features that landed in Chrome this year.

We take a look at a real-world website to investigate what's slowing it down and how it could be optimized.