Transparent PNG Compressor
Compress PNG files with transparency without losing the alpha channel. Reduce PNG file sizes for logos, icons, and UI assets. 100% client-side, no uploads.
Platform Preset Details
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Supports PNG, JPG, WebP, AVIF, SVG, and GIF (static). Fully secure, runs 100% locally.
Global Presets
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Related Tools & Presets
Preserving transparency while reducing PNG size
PNG transparency is essential for logos, icons, UI mockups, and design assets. Unlike JPEG, which replaces transparency with a solid background, PNG preserves the alpha channel. However, this comes at a cost: PNG files are often 3-10x larger than their JPEG equivalents.
- Lossless optimization: Remove metadata, optimize Huffman tables, and reduce color palette without quality loss.
- Quantization: Reduce the number of colors in indexed PNGs to shrink file size while maintaining visual quality.
- WebP conversion: For web delivery, convert PNG to WebP. WebP supports transparency and typically produces 25-35% smaller files.
- SVG alternative: For simple logos and icons, SVG provides infinite scalability with tiny file sizes. Consider converting vector-friendly designs to SVG.
- Resize before compressing: Downscale oversized PNGs to actual display dimensions. A 2000px logo displayed at 200px wastes 90% of its bytes.
PNG vs WebP for transparent assets
For the best balance of transparency and file size, optimize PNGs for lossless scenarios and convert to WebP for web delivery where supported.
| Feature | PNG | WebP |
|---|---|---|
| Transparency support | Yes (alpha channel) | Yes (alpha channel) |
| Compression type | Lossless only | Lossy and lossless |
| Typical file size | Large | 25-35% smaller |
| Browser support | Universal | All modern browsers |
| Animation | No (APNG is limited) | Yes |