Jatin K MalikandGitHub 071b7b5da3 perf: optimize PageSpeed Insights performance score (#105) (#106) ...

This commit implements comprehensive performance optimizations to improve
the PageSpeed Insights score from 70/100 to targeting 90+.

## Images & Assets (Est. 200+ KiB savings)
- Optimize vocalinux.png: 207KB → 44KB (79% reduction)
- Add WebP versions for all logo sizes (32, 64, 96, 192, 512px)
- Create og-image.webp: 274KB → 176KB (36% reduction)
- All WebP images provide ~92% size reduction over PNG

## JavaScript Optimization (Est. 84 KiB savings)
- Lazy load react-syntax-highlighter with next/dynamic
- Created CodeBlock component for async code highlighting
- Reduces initial bundle size by deferring heavy syntax highlighter

## Bundle Configuration
- Disable production source maps (reduces bundle size)
- Add .browserslistrc targeting modern browsers (est. 12 KiB savings)
- Remove legacy browser polyfills (IE11, old Android, etc.)

## Critical Rendering Path (Est. 300ms LCP improvement)
- Add preconnect hint for api.github.com
- Defer Google Analytics to lazyOnload strategy

## Caching Strategy
- Add cache headers configuration for static assets
- Cache-Control: public, max-age=31536000, immutable
- Applied to _next/static/* and image assets

## Accessibility Fixes
- Fix footer color contrast: text-zinc-500 → text-zinc-400
- Add prefers-reduced-motion media query support
- All animations respect user motion preferences

## Expected Impact
- Total estimated LCP reduction: ~1.5-2 seconds
- Bundle size reduction: ~100 KB
- Targeting 90+ performance score (up from 70)

2026-01-30 22:47:59 -08:00

176 KiB

1200x630px

Raw History