#mobile

3 posts

Performance

#performance#memory#lighthouse#mobile#debugging

Lighthouse Score 100 and Still Crashes: OOM and Long Sessions

Why a perfect Lighthouse score doesn't prevent out-of-memory tab crashes in long-running SPAs — and how to build apps that survive 8-hour sessions.

Ashish Apr 4, 2026 12 min read
Performance

#performance#mobile#DOM#css#frontend

DOM Performance on Mobile: Lab vs Real Device Reality

Budget Android devices run your JS 5-10x slower than your MacBook. Content-visibility, CSS containment, touch scroll, and real debugging on low-end hardware.

Ashish Apr 2, 2026 12 min read
Under the Hood

#lottie#animation#frontend#mobile#design

Why Airbnb Built Lottie: JSON Vector Animations

How Lottie works: JSON After Effects timelines rendered by cross-platform runtimes. Why Airbnb chose vector JSON over GIF and video for UI animations.

Ashish Mar 31, 2026 3 min read