Reduce PNG file size while preserving alpha transparency. Free and instant in your browser. No server, no account, no watermarks.
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PNG uses lossless compression by default — every pixel is stored exactly. Use PNG compression when you need transparency preserved, your image has text or sharp lines, or the portal specifically requires PNG format.
For photos where transparency is not needed, converting to JPEG will always produce a smaller file. Use the PNG to JPG converter for that.
Why is my PNG so much larger than a JPG of the same image? PNG uses lossless compression, which preserves every pixel exactly — great for screenshots, graphics with text, and images needing transparency, but it produces larger files than JPEG's lossy compression, especially for photos with lots of color gradients.
Will compressing a PNG lose transparency? No, this tool preserves the alpha (transparency) channel. It reduces file size by optimizing color data and removing redundant image metadata, not by discarding transparency.
When should I use PNG compression instead of converting to JPG? Keep PNG (and just compress it) when the image has transparency, sharp edges/text, or few colors — like logos, icons or screenshots. Convert to JPG instead when it's a photograph and you don't need transparency, since JPG will produce a much smaller file for that content type.