Images account for over 60% of total page weight on average websites. Unoptimized 5MB+ DSLR photos crush Google Core Web Vitals (LCP scores) and increase bounce rates.
In this guide, we show you how to reduce image file sizes by 80% without visible loss in quality.
1. WebP vs JPEG vs PNG
- JPEG: Great for photographs, but lacks transparency support and uses older compression.
- PNG: Lossless format supporting crisp text and transparency, but results in huge file sizes.
- WebP: Modern web format by Google that provides 25-34% smaller file sizes compared to JPEG at equivalent quality, with full alpha transparency support.
2. Best Practices for Web Image Optimization
- Convert to WebP: Replace PNGs and JPEGs with WebP images for web rendering.
- Scale to Display Size: Never serve a 4000x3000px image inside a 400x300px card. Scale images to match expected display width.
- Lossy Compression: A quality setting of 80-85% reduces file size by up to 70% with 0 perceptible difference to the human eye.
3. Optimize Images Instantly
Use Vydaro’s [Image Compressor](/image-compressor) and [Image to WebP Converter](/image-to-webp) to optimize your graphics directly inside your browser safely.