Compress PNG Image Files for Free (easy download)

Make PNGs genuinely smaller. Most images become a palette PNG at a fraction of the size — and when a file already uses 256 colours or fewer, that conversion is completely lossless.

Drop PNG images here or click to browse

Several at once is fine — up to 30 files, 50 MB each.

Everything runs on your device — no image is uploaded. Transparency is preserved. Palette conversion is lossless whenever the original already uses no more colours than the palette holds.

As another way to compress a PNG image, you can convert a PNG to a JPG file here.

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Compress PNG images online — fast, free, and lossless. Flipper File’s PNG Compressor reduces image file size without losing quality, perfect for web designers, developers, and everyday users. The compression happens entirely in your browser, so your images never leave your device.



How to Compress PNG Images

  • Upload your PNG: Click or drag a file (up to 10 MB) into the compressor area.
  • Choose options: Adjust color depth (e.g. 32-bit or 24-bit) and resolution to match your optimization goals.
  • Download instantly: Once compressed, your optimized PNG file is ready to download — no signup or watermark.


Why Use a PNG Compressor?

PNG images can quickly become large due to their lossless nature and alpha transparency. By compressing PNGs, you improve website loading times, reduce storage costs, and make sharing smoother. Flipper File’s advanced compression engine maintains sharp details and color accuracy while minimizing file size — ideal for optimizing graphics, icons, and web visuals.



Frequently Asked Questions

How does PNG compression work?

PNG compression removes redundant data and optimizes color representation while preserving every pixel. Our tool uses true lossless compression to maintain the original image quality and transparency.

Is this PNG compressor safe?

Yes. All compression happens locally within your browser — your files are never uploaded to or stored on a server.

Will compression affect transparency?

No. The tool preserves alpha transparency, keeping transparent areas intact while reducing file size.

Can I compress multiple PNGs at once?

Currently, this compressor handles one PNG file at a time. You can repeat the process for multiple images.

Does this work for web performance optimization?

Absolutely. Smaller PNGs improve site speed, enhance Core Web Vitals, and support better SEO performance for image-heavy pages.

Fast, private, and lossless — optimize your PNG images with Flipper File’s free online compressor.

Compression Tool Library

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