Why Proper PNG Sizing Matters

  • Wrong-sized PNGs cause blurry rendering on retina displays
  • Oversized transparent PNGs waste bandwidth and memory
  • Consistent sizing prevents layout shift in UI components
  • Design-system PNG assets must match token-defined dimensions exactly

PNG Resizing Best Practices

  • Always resize from the largest source — never scale up from smaller PNGs
  • Generate @2x and @3x variants for retina and high-DPI displays
  • Verify PNG alpha edges after resize — look for ringing or halos
  • Keep the PNG master for future re-resizes at different dimensions
  • Test PNG output on both light and dark backgrounds for alpha correctness