Reduce PNG file sizes by up to 70% while preserving transparency and visual quality. Choose between lossy (smaller files) or lossless (zero quality loss) compression. Also try our JPG Compressor or PNG to WebP for even smaller web images. For maximum lossless savings, use lossless PNG optimizer OptimizePNG.com for multi-pass optimization.
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Reduces colors through quantization, achieving 50-70% size reduction with barely noticeable differences. Best for web images, thumbnails, and social media. Our JPG compressor uses the same principle for photos.
Restructures the PNG data stream without changing any pixels. Typically saves 5-25%. The safest choice when pixel accuracy matters - ideal for assets used in design tools. For deeper multi-pass lossless optimization, OptimizePNG.com is a great companion tool.
Both modes fully preserve the PNG alpha channel. Your transparent backgrounds remain intact after compression, keeping your files ready for favicon generation, layering, or web use.
Large PNGs slow down page loads. Compress to improve Core Web Vitals scores. For even better performance, use our PNG to WebP converter.
Screenshots, UI elements, and app icons in PNG format compress well while keeping transparency. Then convert to ICO format for favicons.
Many platforms and email clients have attachment limits. Compress PNGs to stay within limits without losing transparency or visual quality.
Working with large design assets? Batch-compress your PNG library and save significant disk or cloud storage space with our bulk uploader.
Lossy compression reduces the color palette and achieves 50-70% size reduction - the change is usually invisible but technically some color data is discarded. Lossless compression reorganizes the file structure without changing any pixels, typically saving 5-25%. Use lossy for web images, lossless when you need bit-perfect output.
Yes - both lossy and lossless modes fully preserve the PNG alpha channel (transparency). Your transparent backgrounds remain intact. This makes compressed PNGs ideal for creating ICO favicons or layering in design tools.
Results vary by image. Simple graphics and logos with flat colors compress by 50-70% with lossy mode. Photos and complex images typically achieve 20-50% reduction. Lossless mode usually saves 5-25%. For maximum lossless savings, convert to WebP for the smallest possible web images.
For web use, converting to WebP is often the better choice - WebP can be 30% smaller than a compressed PNG. However, PNG is necessary when you need maximum browser compatibility or are working with tools that require PNG specifically, such as ICO favicon generators.
Yes. Files are processed on our server and automatically deleted within 24 hours. We never store, share, or analyze your images. All transfers use HTTPS encryption. No account or registration required.
Light - Best visual quality, 20-40% size reduction. Ideal for professional use and design assets. Balanced - Our recommended setting, 40-60% reduction with minimal quality loss. Great for web and general use. Maximum - Smallest possible files, 60-70% reduction. Some quality loss may be visible; best for thumbnails or bandwidth-limited situations.