Why Image Optimization Matters
Images typically account for 50-70% of a webpage's total size. Unoptimized images slow down your site, hurt SEO rankings, and frustrate users. Google considers page speed a ranking factor, making optimization essential.
Image Formats Explained
JPEG/JPG
Best for photographs and complex images with many colors. Supports lossy compression for smaller file sizes.
PNG
Ideal for graphics, logos, and images requiring transparency. Supports lossless compression but creates larger files.
WebP
Modern format offering superior compression. Supports both lossy and lossless compression with transparency.
Compression Techniques
- Lossy Compression: Permanently removes some image data. Quality loss is often imperceptible at 70-85% quality.
- Lossless Compression: Reduces file size without losing any image data.
Best Practices
- Right-size images: Don't serve a 4000px image for a 400px display area
- Use responsive images: Serve different sizes for different screen sizes
- Lazy loading: Load images only when they enter the viewport
- Modern formats: Use WebP with JPEG/PNG fallbacks
Conclusion
Image optimization is crucial for web performance. Use our free image compression tool to reduce file sizes while maintaining visual quality.
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