Context
High-traffic pages exhibited inconsistent load performance and delayed interactivity, impacting reliability and user experience.
What I Did
- Analyzed runtime bottlenecks using performance profiling and Core Web Vitals diagnostics.
- Implemented critical-path prioritization and deferred non-essential execution.
- Eliminated render-blocking resources and optimized bundle composition to reduce payload size.
Outcomes
- LCP improved from 3.1s to 2.4s on target routes.
- INP improved from 280ms to 190ms on key journeys.
- Transferred JS/CSS payload reduced by 22% (about 180 KB).