Google's PageSpeed Insights keeps telling you to "serve images in next-gen formats." This is how.
Why JPG → WebP
- 25–35% smaller than JPG at the same quality
- Better gradient handling (fewer banding artifacts)
- Supports transparency (JPG doesn't)
- Supports animation (like GIF but smaller)
Quality settings
- **90–95%** — visually identical to source
- **80–85%** — best size/quality for web
- **70%** — fine for thumbnails
Speed
Batch convert 500 images in about 30 seconds. Everything runs in your browser.
Core Web Vitals impact
Reducing image weight by 30% typically improves LCP (Largest Contentful Paint) by 15–25%. Real user data.