The JavaScript midlife crisis
Rewriting tools in Rust, Go, and Zig makes them faster, but fewer developers can maintain them.
Performance news
Improving site performance by shipping more CSS
GitHub’s Primer moved from CSS-in-JS to CSS Modules, cutting server rendering time by 55%.
The browser’s main thread is expensive
Splitting, batching, and offloading work to keep every frame under 10 milliseconds.
Fine, I’ll build my own text editor!
Canvas, contenteditable, and textarea compared for building an editor in the browser.
Making a long list fast: content-visibility vs. virtualization
Why unmounting rows costs you find-in-page, anchor links, focus, and per-card state.
Intent to ship: JPEG XL
Firefox ships the format with the Rust jxl-rs decoder, progressive rendering, and lossless wins.
Field guide to the Chrome DevTools Performance panel
An interactive walkthrough of the waterfall, flame chart, LCP, CLS, INP, and the Insights panel.
Source maps or not?
When npm packages actually need them, and how much install size they cost.
Cross-Origin Storage API: stop downloading twice
A proposed API to store big files by hash and share them across origins.
The quiet problem with unnecessary async
Marking sync code as
asyncchanges its contract and propagates Promises through callers.
The website specification
A platform-agnostic reference of features every quality website should have.
Replacements.fyi: performant, safer npm package alternatives
Find more performant and safer replacements for outdated or unnecessary npm packages.