Advanced PNG Compressor

What makes PNG compression different?

PNG compression uses lossless algorithms that preserve all image data while reducing file size. This makes it ideal for graphics with text, logos, and images requiring transparency. Our compressor uses advanced techniques like color reduction, optimized filtering, and DEFLATE compression to minimize file sizes without quality loss.

Will transparency be preserved?

Yes! Our compressor fully supports alpha transparency channels. The 'Preserve transparency' option ensures that transparent backgrounds remain intact after compression. For best results:

• Enable transparency preservation in settings
• Use PNG-24 format for full alpha channel support
• Avoid converting to JPG which doesn't support transparency

When should I reduce colors?

Reducing colors can significantly decrease PNG file sizes:

• Graphics & logos: Reduce to 16-256 colors
• Screenshots with limited colors: 128-256 colors
• Photographs: Keep 256+ colors
• Complex images: Maintain original color depth

Enable dithering to smooth color transitions when reducing colors.

What compression level should I use?

Higher compression levels create smaller files but take longer to process:

• Level 0-3: Fast processing, moderate compression
• Level 4-6: Balanced speed and compression
• Level 7-9: Best compression, slower processing

For most images, level 6 provides the best balance.

Can I convert JPG to PNG?

Yes! Our compressor can convert JPG images to optimized PNG format:

1. Upload JPG images along with PNG files
2. Compress as usual - they'll be converted to PNG
3. Download the optimized PNG versions

Note: Converting JPG to PNG may increase file size since PNG is lossless.

Is my image data secure?

Absolutely. All processing happens locally in your browser:

• Images never leave your computer
• No server uploads or cloud processing
• No images are stored or transmitted
• Complete privacy guaranteed