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Compress PNG

Scale oversized PNGs down to a sensible width while keeping the lossless format.

Drop your files here

Nothing is uploaded — your file is processed on this device.

Options for Compress PNG

Images wider than this are scaled down; narrower images are left alone.

PNG is a lossless format, so the saving comes from reducing pixel dimensions rather than image quality. For photographs, converting to JPG saves far more.

How to compress png

  1. 1Add your PNG files.
  2. 2Set the maximum width.
  3. 3Compress and download.

About this tool

The reason a PNG screenshot is 4 MB is almost always its pixel dimensions: a retina capture is twice the width it needs to be for on-screen display. Because PNG is lossless, the honest way to make it smaller is to scale it, not to degrade it.

Set a maximum width — 1600 px suits most web and document use — and oversized images are resampled with smooth interpolation while narrower ones pass through untouched. Text and lines stay crisp because no lossy compression is applied.

What it's good for

  • Slimming retina screenshots before adding them to documentation.
  • Preparing PNG diagrams for a web page.
  • Cutting the size of an image set for email.
  • Standardising a folder of exports to one width.

Features

  • Lossless

    No compression artefacts are introduced.

  • Smart scaling

    Only images wider than your limit are resized.

  • Batch friendly

    Process a whole set at once.

  • Local

    Nothing is uploaded.

Questions people ask

Why is my PNG still large?
PNG cannot compress photographs well. Convert it to JPG with Convert Image Format.
Is transparency kept?
Yes — PNG transparency survives the resize.
Can I set an exact size in pixels?
Use Resize Image for precise width and height control.

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