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Compress PNG Online

Reduce PNG file size without losing quality. Resize, optimize, and download — all in your browser.

Drop PNG here or click to upload

PNG files up to 50MB

Why Compress PNG Files?

Lossless Compression

PNG uses lossless compression by default. Re-encoding through the canvas API can optimize the file without losing any image data.

Reduce File Size

Resize oversized PNGs or reduce color depth to dramatically shrink file sizes — perfect for web, email, and app assets.

Batch-Free Simplicity

Upload one PNG, adjust settings, and download. No complicated batch queues or confusing options to wade through.

100% Private

All compression happens locally in your browser. Your images are never uploaded to any server — your files stay on your device.

Frequently Asked Questions

How does PNG compression work?+
PNG uses lossless compression, meaning no image data is lost. This tool reduces PNG file size by re-encoding the image through the browser's canvas API, optionally resizing dimensions and reducing color depth to produce a smaller file.
Will compressing a PNG reduce image quality?+
If you keep the original dimensions and don't enable color reduction, the output is visually identical to the original. Resizing or reducing colors can lower quality slightly but produces significantly smaller files.
How much can I reduce a PNG file size?+
Results vary by image. Resizing a large PNG to a smaller width can reduce file size by 50-80%. Color reduction adds further savings. Even re-encoding alone can sometimes shave off 5-20% depending on the original encoder.
Is this PNG compressor free?+
Yes, completely free with no limits. All processing happens in your browser—your images are never uploaded to any server.

Learn More

Improve your image workflow with these guides:

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