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PNG

PNG — Portable Network Graphics

Image

PNG compression applies lossless techniques — optimizing filter methods and zlib deflate settings — to shrink file sizes without discarding any pixel data. Typical savings range from 20–60% compared to unoptimized PNGs, making pages faster while preserving transparency and sharp edges perfectly.

up to 60%Powered by Pillow.png

✓Common use cases

  • ›Optimizing UI assets and icons for web delivery
  • ›Compressing logos and graphics that require transparent backgrounds
  • ›Reducing screenshot sizes for documentation sites
  • ›Shrinking PNG sprites for game or app assets

★Advantages

  • ›Fully lossless — no pixel data is discarded
  • ›Preserves transparency (alpha channel) exactly
  • ›Significant size reduction (20–60%) without visual degradation
  • ›Compatible with every major browser and image editor

⚙Technical details

PNG uses DEFLATE lossless compression combined with pre-compression row filters (None, Sub, Up, Average, Paeth). Optimizers try all filter combinations and select the best; palette quantization (e.g. reducing 24-bit to 8-bit indexed) can further cut sizes while preserving perceived quality.

Compress your PNG file

Drop your PNG file here

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.png

Max file size: 100 MB · Your file is processed securely and deleted after compression.

Frequently asked questions

Does compressing PNG reduce quality?

For image compression, quality depends on the setting you choose. At 75–85% quality the difference is barely perceptible. For lossless formats like PNG, compression is entirely lossless — no pixel data is discarded.

How much can I reduce a PNG file?

PNG files can typically be reduced by up to 60% depending on the source content and the compression level you select. Files with lots of detail compress less than simpler content.

Is my PNG file safe when I compress it?

Yes. Your file is uploaded over an encrypted HTTPS connection, processed on our secure servers, and permanently deleted immediately after you download the compressed output. We never store or share your files.

What tool is used to compress PNG files?

We use Pillow — a battle-tested, open-source compression engine trusted by developers worldwide — to process PNG files reliably and efficiently.