Why Image Compression Matters
Images account for roughly 50–70% of a typical web page’s total size. Page speed affects SEO, bounce rate, mobile users, and hosting costs.
Target File Sizes
| Image Type | Recommended Size |
|---|---|
| Hero / banner | < 300 KB |
| Product photo | < 80 KB |
| Thumbnail | < 30 KB |
The Two Types of Compression
Lossy: Permanently removes some data. Best for photos. Typical savings: 60–80%.
Lossless: No quality loss. Best for screenshots, logos. Typical savings: 10–30%.
Step-by-Step
- Choose the right format (WebP for photos)
- Resize before compressing
- Set quality to 80% for most web images
- Use our Image Compressor to process in your browser
- Verify the result at 100% zoom
Common Mistakes
- Compressing PNG photos (use JPG or WebP instead)
- Not resizing before compressing
- Using 100% quality "for safety" (3–5× larger with no visible difference)
- Compressing the same image twice
Try the Image Compressor — Free
No account needed · 100% private · Runs entirely in your browser