imglio-logo
Imglio

PNG Compressor

Reduce image size instantly. No upload, 100% private, runs in your browser.

Compression Settings

Image Compression Guide

Optimize your images efficiently without sacrificing quality.

Optimize your PNG images while preserving transparency and visual quality. PNG files are typically larger due to their lossless nature, but our tool intelligently reduces their size without removing important details. Ideal for logos, graphics, and images with transparent backgrounds, this tool helps you keep quality intact while improving file efficiency. Best of all, it runs entirely in your browser, so your files never get uploaded to a server. It's the fastest, most private way to compress PNG images online.

Why Imglio? PNG compression is trickier than JPG because the format is lossless by nature. Imglio uses advanced techniques to reduce PNG size while maintaining image quality and preserving transparency, something many free tools get wrong.

How to Use

  1. Upload your PNG file to the tool
  2. Select your compression preference
  3. Preview the compressed image (transparency preserved)
  4. Download the optimized PNG

Features

  • Compress PNG files with transparency support
  • Adjust compression level for quality control
  • No server upload, all processing in browser
  • Batch compression supported
  • Free, no limits or watermarks

Tips for Best Results

  • Use WebP format
  • Avoid PNG for photos
  • Resize large images

Use Cases

  • Optimize website performance
  • Reduce email attachment size
  • Meet upload limits
  • Improve SEO speed score

Frequently Asked Questions

Yes. Imglio preserves alpha channels (transparency) when compressing PNG files.
If transparency isn't needed, converting to JPG or WebP usually results in a much smaller file. Imglio gives you the option to choose.
PNG compression varies by image content. Flat-color graphics can shrink by 80% or more; complex photos typically compress 20-50%.

Reduce your PNG file size right now in your browser, for free, with no server upload.