Compress PNG

Reduce PNG file size losslessly. For photos, try PNG to JPG/WebP instead - much smaller.

Compressing a photo? PNG is a lossless format, so compression here can only remove redundant file structure - it can't shrink photographic content much, because photos have very little exact repetition for lossless compression to find. A typical photo might only shrink 5-15% this way, not the 50-70%+ you'd expect from an image-optimizer app.

For photos specifically, converting to JPG or WebP instead will typically get you 50-70% smaller with no visible quality loss - those formats use compression designed for photographic content, which PNG deliberately doesn't do. Use this Compress PNG tool for PNGs that need to stay PNG (transparency, sharp graphics/screenshots) - those compress much better here than photos do.

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Choose a .png file

Advanced: target a specific file size

Fill in one of these to override the quality setting above and aim for a specific result size instead. Leave both blank to just use the quality slider (or the default, if there isn't one on this tool).

Target file size (KB) Or reduce by (%)

Works by re-encoding at different quality levels and keeping the best one that still fits - for JPG/WebP/AVIF this adjusts image quality (a graceful, hard-to-notice tradeoff); for PNG, since it's a lossless format with no quality dial, it reduces the color palette instead if needed (a more visible tradeoff on photos, usually fine on graphics/screenshots). Has no effect on GIF/BMP. If your target is smaller than the image can honestly go, you'll get the closest size actually achievable rather than a broken or misleadingly-labeled file - check the downloaded filename, it always shows the real result size.

Files are processed on our server and deleted automatically. Max 150MB per file, 200MB total, up to 30 files.

How to Use Compress PNG

Reduce PNG file size losslessly. For photos, try PNG to JPG/WebP instead - much smaller.

1 Upload your PNG file

Choose a file from your device, or drag and drop it into the upload area.

2 We convert it automatically

No settings to configure for most files - it just works.

3 Download your PNG file

Your converted file is ready to save immediately - no email or signup.

Compress PNG Features

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Compress PNG, Free & Unlimited

Use it as many times as you need - no daily limits, no premium tier, no hidden fees.

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No Sign-Up Required

Upload, convert, and download in seconds - no account or email address needed.

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Fast & Automatic

Processing starts the moment you upload - most conversions finish in seconds.

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Private by Design

Files are sent over HTTPS and automatically deleted from our server after processing.

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Works on Any Device

Phone, tablet, or desktop - if it has a browser, it can use this tool.

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Files Cleaned Up Automatically

We don't keep copies of what you upload - everything is purged automatically.

Compress PNG

How to Use Compress PNG

Compress PNG Features

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