Topic: Performance

When I started giving talks about SVG back in 2016, I'd occasionally hear a question I never had a great answer for: What if you have a lot of icons on a page?… More

By leveraging native browser controls, we can make accessible and high-performing components with just a dash of JavaScript. More

Lighthouse Parade is a Node.js command line tool that crawls a domain and gathers lighthouse performance data for every page. With a single command, the tool will crawl an entire site, run a Lighthouse report for each page, and then… More

Website speed and performance are a question of equity. Fast and lightweight sites mean that everyone can access your content equally. It’s not only an economic imperative; it’s a moral imperative. More

I recently found myself racing to fill out Chipotle’s online order form before my mother could find her credit card. In the process, I discovered a bug that could cost Chipotle $4.4 million annually. My parents are retired. They continue… More

What Progressive Web Apps features should we expect Apple to support?… More

Apple has started development of service workers—the key technology powering Progressive Web Apps. More

A couple weeks ago, I received a polite inquiry from Colin van Eenige asking if I would help him with a graduation project by answering some questions about Progressive Web Apps. We exchanged a few emails. I answered his questions. More

Yesterday, I examined how The Washington Post’s Progressive Web App performs on iOS. Today, I want to take a look behind the scenes on the difficulties I had conducting that analysis. Instrumenting The Washington Post Often when organizations make… More

The Washington Post's Progressive Web App has seen near 5x increase in user engagement on iOS. But iOS doesn't support PWAs. How does that work?… More