RReduce Dimensions

Compress PNG Images Online

Compress PNG images online for free using lossless compression. Reduce PNG file size without losing a single pixel — all in your browser, no upload.

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PNG compression is lossless: it shrinks the file by reorganizing data more efficiently, never by throwing pixels away. That means transparency stays intact and quality is preserved exactly. It is the safe way to lighten logos, icons, and screenshots.

Lossless PNG Compression

Unlike JPG, PNG keeps every pixel perfect. Our compressor re-encodes the file, strips unused metadata, and applies optimal deflate compression. The result is a smaller PNG that is bit-for-bit identical to the original when decoded.

Reduce PNG Size Effectively

  • Re-encode to remove bloated metadata and optimize compression.
  • Reduce color depth where the image allows (e.g. 8-bit instead of 24-bit).
  • For photos, convert to JPG or WebP for real savings.
  • Keep PNG for graphics that need transparency or crisp edges.

PNG photos stay large

Lossless compression cannot shrink complex photo detail much. If your PNG is a photograph, converting to JPG or WebP will save far more space.

Compress PNG in Your Browser

  1. Open the PNG compressor below.
  2. Add your PNG (processed locally, no upload).
  3. Let the tool optimize the file losslessly.
  4. Download the smaller PNG instantly.
Open PNG CompressorFree, no upload, lossless.

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Frequently Asked Questions

Can PNG be compressed without losing quality?

Yes. PNG compression is lossless, so shrinking a PNG never throws away pixels. Our tool re-encodes the file to remove unused metadata and optimize the compression.

Why is my PNG still large after compression?

Photographs in PNG are huge because lossless compression cannot shrink complex detail. For photos, convert to JPG or WebP to get real savings.

Does compressing PNG remove transparency?

No. Lossless PNG compression keeps the alpha channel intact, so transparent backgrounds stay transparent.