Compress PNG
Compress PNG images instantly in your browser. No uploads, no tracking, no quality loss.
Drag & drop your image
or click to browse files
Supports: PNG (max 100MB)
Updated for 2026
What is PNG Compression?
PNG compression reduces the file size of Portable Network Graphics (PNG) images while preserving their transparency and quality. Unlike JPGs, PNGs are "lossless," meaning they retain all image data, which can result in large file sizes.
Our smart PNG compressor uses advanced algorithms (like quantization) to significantly lower the file size—often by 50-80%—while keeping the image looking virtually identical to the original, including its transparent background.
When should you compress a PNG?
- Website Logos & Icons: Ensure your branding elements load instantly without pixelation.
- Screenshots: Screenshots are often saved as large PNGs. Compress them to share easily via Slack, Teams, or email.
- App Development: Reduce the size of your app bundle by optimizing all UI assets and sprites.
- Transparent Images: If you need transparency but want smaller files, compressing your PNGs is the best solution.
How to compress PNG online
- Upload PNG: Drag and drop your PNG file into the tool above.
- Analyze: The tool automatically scans the image to find the best compression strategy.
- Compress: We reduce the file size while maintaining transparency and sharpness.
- Download: Get your optimized PNG image instantly.
Compressed PNG vs Original (Quick comparison)
| Feature | Original PNG | Compressed PNG |
|---|---|---|
| File Size | Very Large | Significantly Smaller |
| Transparency | ||
| Quality | Lossless (100%) | Perceptually Lossless |
| Best For | Editing, Archiving | Web, Apps, Sharing |
Is it safe to compress images online?
Absolutely. We understand that your screenshots and designs may contain sensitive information.
That's why PictureConvert processes all images locally in your browser. Your PNG files are never uploaded to a server, ensuring 100% data privacy and security. What happens on your device stays on your device.
Related Tools & Guides
Helpful Guides
What This Tool Does
This tool compresses PNG images to reduce file size while preserving transparency. It optimizes the image data to create smaller files that still maintain good visual quality. For web-ready images, [converting to WebP](/png-to-webp) often provides even better results.
When To Use It
Use this compressor for PNG images that are too large, especially web graphics, logos, icons, and screenshots. Perfect when you need smaller files but must keep transparency. If you need to [resize the dimensions](/resize-image) as well, we have a tool for that.
Tips for Best Results
- 1PNG compression preserves transparency unlike converting to JPG
- 2Results vary based on image content - graphics compress better than photos
- 3For photos, consider converting to JPG for better compression
- 4Some PNGs with many colors may not compress significantly