Free PNG Compressor — Reduce PNG File Size Online

Compress PNG images online free to reduce file size for websites, apps, and content delivery. Smaller PNG files with no quality loss — no signup needed.

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PNG Compressor tool interface

Drop images here

Upload up to 20 supported files

Image Size

Compress Target

30%

Low compressionHigh compression

Max Width

Enable Resize Image to use Max Width.

Queue Summary

0/20 files

0 Bytes total size

No compressed output yet.

PNG Compressor content

How the PNG Compressor Works

This PNG compressor reduces the file size of PNG images using lossless and lossy compression techniques that run directly in your browser. PNG is the standard format for screenshots, UI elements, logos, and graphics with transparent backgrounds — making PNG compression a regular task for web developers, designers, and content teams who work with these file types.

Unlike JPEG compression which is always lossy, PNG compression can be lossless — meaning file size is reduced without removing any visual data. Lossless PNG optimization works by using more efficient encoding algorithms on the existing pixel data, which can typically reduce file size by 20–40% with zero quality change. Lossy PNG compression, which reduces the color palette, can achieve 60–80% size reduction with minimal visible impact for most UI assets and screenshots.

This compressor is useful for reducing the weight of website assets, app interface images, screenshots shared in documentation, and any PNG file that needs to be smaller without a change in visual appearance. Because compression runs in your browser, your files are never sent to an external server — keeping graphic assets and screenshots private during the optimization process.

How to Compress PNG Files Online Free

Compress PNG images online free to reduce file size for websites, apps, and content delivery. Smaller PNG files with no quality loss — no signup needed. Follow the steps below to use the tool correctly.

  1. Upload the PNG file

    Select the PNG image you want to optimize from your device.

  2. Process the image

    The tool applies PNG compression and shows the before and after file sizes.

  3. Download the compressed PNG

    Save the smaller PNG file for use in your web or app workflow.

PNG Compressor Features

  • Compress PNG files using lossless and lossy compression options
  • Reduce PNG file size by 20–80% depending on compression mode
  • Preserve transparency and alpha channel in compressed PNG output
  • Runs in the browser — PNG files never uploaded to a server
  • Free with no account, signup, or file size restrictions

Who Should Use This PNG Compression Tool

  • Web developers reducing PNG asset weight for faster page loads
  • Designers optimizing UI screenshots and graphics for documentation
  • App developers reducing PNG image sizes for lighter app bundles
  • Content creators compressing PNGs before uploading to websites
  • Anyone reducing PNG storage use and upload times

Frequently asked questions about PNG Compressor

Why use a PNG compressor instead of converting to JPEG?

PNG supports transparent backgrounds and lossless compression, which JPEG does not. For logos, icons, screenshots, and graphics with transparency, PNG must stay PNG — compression reduces the file size without forcing a format change.

Can I compress PNG files without losing quality?

Yes. Lossless PNG compression reduces file size by optimizing the encoding without removing any visual data. Typical lossless reductions are 20–40% with absolutely no quality change.

Are my PNG files private when using this tool?

Yes. This PNG compressor runs entirely in your browser. Your files are never uploaded to any external server during the compression process.

Is this PNG compressor free?

Yes. This is a completely free online PNG compression tool with no file size limits. No account, signup, or payment is required.