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How Much Can You Compress a PNG File? Real Test Results (2026)
By admin · Jun 19, 2026
You've heard claims that PNG compression can reduce file sizes by "up to 80%." But how much can you really expect in practice? We ran real compression tests on 10 different types of PNG images using compresspngfile.com and documented the exact results.
Test Methodology
We compressed 10 different PNG image types, all saved at maximum quality (PNG-32). All compression was done using compresspngfile.com (powered by pngquant). No resizing was performed — only compression.
Test 1: Website Logo (800×400 px)
| Original Size | 485 KB |
| Compressed Size | 89 KB |
| Reduction | 81.6% |
| Quality | Identical — no visible difference |
Logos compress extremely well because they typically have flat colors, sharp edges, and large uniform areas.
Test 2: Website Screenshot (1920×1080 px)
| Original Size | 3.2 MB |
| Compressed Size | 680 KB |
| Reduction | 78.7% |
| Quality | Excellent — interface text and elements look identical |
Test 3: Infographic (1200×1800 px)
| Original Size | 4.1 MB |
| Compressed Size | 890 KB |
| Reduction | 78.3% |
| Quality | Excellent — text sharp, icons crisp |
Test 4: Product Photo (2000×2000 px)
| Original Size | 5.8 MB |
| Compressed Size | 1.2 MB |
| Reduction | 79.3% |
| Quality | Very good — minor color shift visible only at 300% zoom |
Test 5: App Icon (512×512 px)
| Original Size | 210 KB |
| Compressed Size | 38 KB |
| Reduction | 81.9% |
| Quality | Identical — pixel-sharp edges preserved |
Test 6: Social Media Graphic (1080×1080 px)
| Original Size | 1.9 MB |
| Compressed Size | 390 KB |
| Reduction | 79.5% |
| Quality | Excellent — colors vibrant, text perfectly legible |
Test 7: Website Banner (1920×600 px)
| Original Size | 2.4 MB |
| Compressed Size | 540 KB |
| Reduction | 77.5% |
| Quality | Very good — gradient areas show minimal color banding at extreme zoom |
Test 8: Complex Photograph (3000×2000 px)
| Original Size | 8.7 MB |
| Compressed Size | 2.4 MB |
| Reduction | 72.4% |
| Quality | Good — some color shift visible at 200% zoom, invisible at normal view |
Test 9: Text-Heavy Graphic (800×600 px)
| Original Size | 380 KB |
| Compressed Size | 72 KB |
| Reduction | 81.1% |
| Quality | Excellent — all text perfectly sharp and legible |
Test 10: Illustration / Digital Art (2400×1600 px)
| Original Size | 6.2 MB |
| Compressed Size | 1.5 MB |
| Reduction | 75.8% |
| Quality | Very good — smooth gradients show very subtle banding only at extreme zoom |
Summary of All Test Results
| Image Type | Original | Compressed | Savings |
|---|
| Logo | 485 KB | 89 KB | 81.6% |
| Screenshot | 3.2 MB | 680 KB | 78.7% |
| Infographic | 4.1 MB | 890 KB | 78.3% |
| Product Photo | 5.8 MB | 1.2 MB | 79.3% |
| App Icon | 210 KB | 38 KB | 81.9% |
| Social Media | 1.9 MB | 390 KB | 79.5% |
| Banner | 2.4 MB | 540 KB | 77.5% |
| Photograph | 8.7 MB | 2.4 MB | 72.4% |
| Text Graphic | 380 KB | 72 KB | 81.1% |
| Illustration | 6.2 MB | 1.5 MB | 75.8% |
| Average | — | — | 78.6% |
Key Findings
- Logos and icons compress best (80%+) — Simple graphics with flat colors consistently achieve the highest compression ratios.
- Screenshots and UI graphics compress very well (77–79%)
- Photographs compress less aggressively (70–75%) — For photos, consider JPG or WebP instead.
- Visual quality was excellent for web use in all 10 tests
- Average compression across all types: 78.6%
Conclusion
Real-world PNG compression results are consistent: most PNG files compress by 70–82% using compresspngfile.com, with visual quality that looks identical at normal viewing sizes.
For logos, icons, screenshots, and graphics — PNG compression is one of the most impactful optimizations you can make for your website's speed. Test it on your own images at compresspngfile.com — free, instant, and no signup required.