Large image files slow down your website and frustrate users. Learn how to compress images effectively while keeping them looking great.
Understanding Image Compression
Image compression reduces file size by removing redundant data. There are two types:
- Lossless compression: Reduces file size without any quality loss
- Lossy compression: Achieves smaller files by discarding some data
Step 1: Choose the Right Format
Before compressing, ensure you're using the optimal format for your image type. See our image format guide for details.
Step 2: Resize Before Compressing
Never display a 4000px wide image in a 400px container. Always resize images to their display dimensions first.
Pro Tip: Create multiple sizes for responsive designs (e.g., 400px, 800px, 1200px) and use srcset to serve the appropriate one.
Step 3: Apply Smart Compression
For JPEG images, quality settings between 70-85% typically provide the best balance between file size and visual quality.
Step 4: Use Modern Formats
Converting to WebP can reduce file sizes by 25-35% compared to JPEG with similar quality.
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