webperf

Monitoring PWA Website Performance

2 minute read Updated

Monitoring the speed of your Progressive Web Apps over time.

How do you monitor website performance? Is it monitored? Do you know if your website is getting faster? Slower? Do you know when it falls below critical performance thresholds? Are you receiving automated alerts? Do you even have alerts? If not, you could be. And it won’t cost you a dime to get started.

This post is going to talk about SpeedTracker. SpeedTracker is a free tool that allows you to monitor website performance over time. Use it to visualize your page speed scores, track Lighthouse metrics, receive alerts and even create a public dashboard consisting of multiple websites for quick reference.

Fetch Inject

Fetching async loader and DOM injection sequencer for the Web.

:: JavaScript / ES Module / Playwright / SvelteKit / Node.js

I conceived of a novel technique for managing asynchronous dependencies hacking away at a coffee shop called 9-11 in Bali back in 2017. Fetch Inject is a tiny JavaScript library and Node module making it possible to deep link to full-sized After Dark Image Gallery images without blocking or slowing down page load.

Optimize Images with Sketch App

4 minute read Updated

Optimize your image assets for the Web using Sketch app.

You know the drill. When you’re building for the Web or mobile performance is everything. Out of the box Sketch does not lend itself to producing flyweight images. But that doesn’t mean you need a second image editor, or even another tool, just to create performant images. Use these techniques to reduce file sizes and optimize images with Sketch.