New blog in the series about building SightRead.org
This post is another installment of the series dedicated to building sightread.org. Parts 1, 2, 3, 4, 5, 6. I've been using TypeScript (actually JSDoc + tsc --noEmit) as my linter for a while. Well, TBH, I didn't do it intentionally, it's just something Claude does outta the box. I saw some linting
New blog post about an experiment in measuring how rendering times are affected by the size of SVGs
The questions Is rendering large SVGs significantly slower than smaller ones? Is there a cut-off size above which things are terrible? And what if these SVGs were PNGs, just for giggles. To answer this let's generate a bunch of test images and render them! The code is here Test images A Python sc
look ma' I'm now opining about AI like the big kids
https://www.wearedevelopers.com/en/videos/1771/ai-is-an-electric-bike-for-the-brain-stoyan-stefanov
This is what turns out to be a part 3 of a series about building sightread.org with minimal tooling: Part 1: Import JavaScript like it's 2026 Part 2: Maximally Minimal Build Process The previous posts covered how I structure js modules for parallel loading and how to build a production-ready a
Huge congrats and kudos to @stoyan for running it and to all the authors for writing articles for this year's Web Performance calendar.
https://calendar.perfplanet.com/2025/
The quality was very high, and it feels like every second post was a banger!
In my previous post I described how I set up sightread.org with no build process and modern JavaScript. The goal was raw ES modules, no transpilation, no bundling, just <script type="module"> and we're off. That worked great for a minute but I wanted just one more thing: long-lived immutabl
Web Performance Calendar day 31 article 5/5: @slightlyoff investigates SPA usage patterns showing that users often trigger only ~1 soft navigation per page load. Heavy upfront JS costs aren’t being amortized, which challenges our assumptions about SPA performance benefits.
https://calendar.perfplanet.com/2025/the-curious-case-of-the-shallow-session-spas/
Buried at the end of this year's instalment of my semi-annual series on network and device reality is a mystery: multiple, independent data sets from the Web Performance community indicate sites built as Single-Page Applications ("SPAs") receive, on average, only one (1) "soft navigation" for every
Stefan Judis