Private PNG tools

PNG Compressor

Create a smaller PNG by adjusting dimensions and color detail, with transparent areas retained in the newly encoded file.

Private image workspace

Choose your PNG image

Your preview will appear here

The image stays on this device throughout processing.

How to use it

Process a PNG in seconds

  1. Choose a PNG image.
  2. Adjust the size and color-detail controls while inspecting the preview.
  3. Compare file sizes and download the new PNG.

Useful for

When to use this tool

  • Reduce oversized interface screenshots
  • Optimize transparent logos and graphics
  • Prepare PNG assets for documentation

How to use it

Get a reliable result

  1. Choose a PNG image.
  2. Adjust the size and color-detail controls while inspecting the preview.
  3. Compare file sizes and download the new PNG.

Useful for

Common workflows

  • Reduce oversized interface screenshots
  • Optimize transparent logos and graphics
  • Prepare PNG assets for documentation

Examples

What to expect

Transparent interface graphic
Input
1600 × 900 RGBA PNG
Output
A re-encoded PNG with transparency and selected dimensions

Complex photos may remain larger as PNG than as WebP or JPG.

Know before you start

Important limitations

  • Color-detail reduction can create banding in gradients.
  • Photographic content often compresses less efficiently as PNG than JPG or WebP.
  • Animation and source metadata are not retained.

Keep editing

Related PNG tools

Resize PNGChange PNG pixel dimensions with an optional locked aspect ratio.Open Resize PNG →PNG to WebPConvert PNG images to compact WebP files while preserving transparency.Open PNG to WebP →Image CompressorCompress one image or a local batch of JPEG, PNG, and WebP files with ZIP download.Open Image Compressor →How to Compress an Image Without Losing QualityLearn what visual quality means, when lossless compression helps, and how to reduce dimensions or encoding quality carefully.Read guide →JPG vs PNG vs WebP: Which Image Format Should You Use?Compare JPG, PNG, and WebP by compression, transparency, editing needs, compatibility, and the kind of image being saved.Read guide →
View all PNG tools

Common questions

Compress PNG FAQ

Is transparency preserved?

Yes. The PNG export retains alpha transparency.

Is PNG compression always lossless here?

Dimension changes and reduced color detail alter pixels, even though the final PNG encoding itself is lossless.

Why is my result not much smaller?

PNG compresses flat graphics well but can remain large for noisy photographs or already optimized files.

Browser-local

Processed on your device

Inputs and results are processed locally in this browser and are never uploaded.

How this processing works

The tool reads and processes this input in your browser. Tool Packer's application server does not receive the input or generated result.

Read the full privacy explanation