Does PNG compression preserve transparency?

Yes. Our PNG compressor preserves the full alpha channel. Transparent areas remain transparent in the compressed output.

How is PNG compression different from JPG compression?

PNG compression maintains transparency and is best for graphics, screenshots, and images with text. JPG is better for photographs where transparency is not needed and smaller files are priority.

Why are PNG files so large?

PNG is a lossless format by default, storing every pixel perfectly. Our compressor applies intelligent lossy techniques to reduce size while keeping visual quality high.

Compress & Optimize

PNG Compressor Online Free - Shrink PNG Files

Name: Compress PNG - ElitePX
Rating: 4.9 (1243 reviews)
Author: ElitePX

Free online PNG compressor to reduce file size while preserving transparency. Instant results.

Reduce PNG file size with smart lossy compression. All processing happens locally in your browser. No image is ever uploaded to a server, making png compressor online free - shrink png files on ElitePX completely private and instant.

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Compiling image processor

This is a free online tool. No account required.

Your images are processed entirely in your browser
Files are never uploaded to any server
No signup, no watermarks, no limits.
Works on any modern browser, desktop or mobile.

Also available at the main tool page: ElitePX: Compress PNG

Why Use This Tool?

Preserves Transparency

Unlike JPG compression, our PNG compressor maintains the alpha channel for transparent backgrounds and overlays.

Up to 70% Size Reduction

Smart compression dramatically reduces PNG file sizes while keeping images visually sharp and crisp.

Perfect for Web Graphics

Compressed PNGs load faster on websites while maintaining crisp edges for logos, icons, and UI elements.

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PNG Compressor Online Free - Shrink PNG Files is powered by Compress PNG on ElitePX. The canonical version of this tool is available at elitepx.com/tools/compress-png. All image processing happens in your browser. Your files never leave your device.