Free Online PNG Compressor
Shrink PNG File Size Without Losing Transparency
Select or Drag & Drop PNG Image
Client-side PNG compression • Maintains transparency
Free Online PNG Compressor – Shrink PNG File Size Without Losing Transparency
Optimize your PNG images instantly with our fast, browser-based PNG Compressor. PNG files offer crisp details and background transparency, but their large file sizes can slow down website loading speeds and consume unnecessary storage. ImagePro.in allows you to compress, downscale, and reduce PNG file sizes directly in your web browser while maintaining sharp visual quality and full alpha-channel transparency.
- Smart Color Depth Reduction: Lower file sizes significantly by quantizing color palettes (256, 128, or 64 colors) while keeping transparent backgrounds completely intact.
- Proportional Dimension Rescaling: Scale down image resolution by percentage to cut extra megabytes from high-resolution screenshots and graphics.
- Side-by-Side Live Preview: Compare original vs. compressed image quality side-by-side with instant metrics showing exact file size savings before downloading.
- 100% Private & Serverless: All compression operations execute client-side inside your browser. Your images are never uploaded to any remote server.
Key Features Included
- Preserves PNG Transparency: Uses alpha-channel-aware HTML5 canvas rendering so background transparency remains intact.
- Palette & Color Quantization: Provides optional color depth controls (256, 128, 64 colors) to significantly reduce PNG file sizes.
- Proportional Rescaling: Built-in resolution scaling slider to quickly downscale oversized graphics.
- Instant Size Metrics: Shows real-time file size comparison and savings percentages before downloading.