PNG Image Compressor
Free online PNG image compressor. Supports lossless and lossy compression, preserves transparency. Quickly reduce file size, no installation.
Click or drag images here, supports multiple
Supports PNG format, max 20MB
Introduction
PNG compression tool is designed specifically for PNG format, using lossless or near-lossless compression to significantly reduce file size while preserving the transparency channel. Ideal for UI design assets, website icons, and product screenshots that need transparent backgrounds. All compression is done locally in your browser — your images are never uploaded to any server.
How to Use
- 1Click the upload area or drag PNG images to the page
- 2Optional: Expand the settings panel to adjust compression parameters
- 3Tool automatically compresses and shows before/after file size comparison
- 4Download the compressed image — transparency channel fully preserved
FAQ
Will PNG compression lose transparency?
No. This tool specifically preserves the PNG Alpha transparency channel — transparent areas remain perfectly intact after compression.
What's the difference between PNG and JPG compression?
JPG doesn't support transparent backgrounds and is best for photos. PNG supports transparency and is ideal for icons, screenshots, and design assets. Use PNG compression if your image has transparent areas.
What if the compression ratio is low?
PNG is inherently a lossless format with limited compression potential. If you don't need transparency, consider converting to JPG or WebP for much smaller file sizes.
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