Does this PNG compressor preserve transparent backgrounds?

Yes! The tool preserves full 8-bit alpha channel transparency so your logos, icons, and transparent cutouts remain crisp without black or white halos.

Can every PNG become dramatically smaller?

PNG is inherently a lossless format. If a PNG is already highly optimized, lossless compression will only yield modest gains (5–15%). To achieve 60–80% savings, convert the transparent PNG to modern WebP format.

What is the difference between lossless and lossy PNG compression?

Lossless compression strips unneeded metadata and optimizes deflate tables without modifying pixel values. Lossy quantization reduces the color palette (e.g. 256 colors), providing much smaller files.

PNG Compressor – Compress PNG Images

Compress PNG graphics, illustrations, and logos while preserving transparent alpha backgrounds. Optimize file size with client-side canvas quantization and optional WebP conversion.

100% Client-Side Privacy: PNG files are processed entirely in browser memory. No data is sent to external servers.

Zero Uploads

Upload PNG Image

PNG Format

Click to select PNG or drag & drop

Supports transparent logos, icons & screenshots

PNG Controls

Optimization Mode

Compression Quality 85%

PNG Stats 0% Saved

Original Size --

Compressed --

Saved --

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Upload a PNG to verify transparency

Dimensions: -- × -- px Alpha Transparency Preserved

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Lossless vs. Lossy PNG Compression

PNG files use lossless DEFLATE compression. Because PNG is designed for pixel-perfect reproduction, shrinking a PNG losslessly only removes unnecessary ancillary chunks (such as creation timestamps and color profiles). To achieve massive 70%+ file size reductions for web performance, converting transparent PNGs to transparent WebP format provides the best of both worlds: 100% alpha transparency with cutting-edge predictive compression.

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