Next.js image optimization: cut weight without losing quality

December 31, 2025•6 min read•URL: /en/blog/optymalizacja-obrazow-next-image
Autor: 7kar7son7 • Developer

WebP/AVIF, right sizing, loading strategy and caching for portfolio/blog.

next.jsperformanceimages

TL;DR

  • nextjs image optimization
  • For sites with portfolios, blogs and lots of images.

Who this is for

  • For sites with portfolios, blogs and lots of images.

Keyword (SEO)

  • nextjs image optimization

Format & sizing

  • Use WebP/AVIF where possible
  • Don’t ship 4000px to mobile
  • Compress before upload (admin)

Loading strategy

  • Top 1–3 images: priority/eager
  • Everything else: lazy
  • Avoid layout shift (fixed dimensions)

Caching & CDN

  • Cache-Control for static assets
  • Immutable for versioned
  • CDN + Next Image pipeline

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About the author

Developer at DevStudio.it. Focused on performance, SEO and production-ready web apps.

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