PNG Compressor: Reduce PNG File Size Without Quality Loss
Compress PNG image files to reduce download sizes while keeping full transparency and sharp graphic details.
Privacy First: 100% Client-Side Processing
Processed in your browser. Files are never uploaded.
How to Use the PNG Compressor: Compress PNG Images Online Free
- 1Select your PNG image.
- 2Adjust compression quality if lossy mode is desired.
- 3Download your optimized PNG.
Formula & How It Works
DEFLATE & Palette Optimization
Optimizes PNG scanline filters and Huffman entropy coding.
Worked Examples
Compressing Web Logo
Input: logo.png (500 KB)
Explanation: 68% file size reduction with identical visual appearance.
Frequently Asked Questions
Does PNG compression affect transparency?▼
No. Alpha channel transparency is fully preserved during optimization.
Quick Reference & Conversion Table
| Image Type | Average Size Reduction |
|---|---|
| Vector Logos / Icons | 50% – 75% reduction |
| UI Screenshots | 40% – 60% reduction |
| Detailed Illustrations | 30% – 45% reduction |
⚠️ Common Pitfalls to Avoid
- •Using PNG for complex natural photographs instead of WebP or JPG.
💡 Practical Real-World Uses
- •Optimizing web page graphics to pass Google Core Web Vitals speed tests.
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