compress

Compress PNG

Compress PNG images locally by exporting lighter JPG or WebP copies.

LocalNo uploadInstant download
1

Source

Select or drop an image file.

Your preview will appear here.

3

Output

Pick a file to start.

Guide

What this tool is for

PNG compression optimizes lossless image files by finding more efficient encoding patterns without discarding any pixel data. Unlike JPG compression, which permanently removes visual information, PNG compression preserves every pixel exactly while still reducing file size through better algorithms. This makes PNG compression ideal for screenshots, logos, diagrams, and any image where quality must be maintained perfectly. While PNG compression yields smaller gains than lossy formats, it is the right choice when the image contains text, sharp edges, transparency, or needs to be edited repeatedly without quality degradation.

This tool compresses PNG files losslessly, reducing file size while preserving every pixel exactly. Use it when you have a PNG that is larger than necessary but cannot tolerate any quality loss, such as screenshots, logos, and technical diagrams.

How to use this tool

A short browser-side flow that keeps the file on the current device.

  1. Upload your PNG file that needs to be smaller.
  2. The tool applies optimized lossless compression automatically; preview confirms no quality change.
  3. Download the compressed PNG, typically 10-50 percent smaller depending on image content.

Best use cases

Common jobs where this page saves a repetitive manual step.

  • Optimizing PNG screenshots for web use and documentation
  • Reducing logo and brand graphic file sizes without quality loss
  • Compressing technical diagrams and charts for documents and presentations

Output and format notes

Details that help you avoid format or quality mistakes before export.

  • PNG compression is lossless; image quality remains exactly the same
  • Simple graphics see the most reduction (50-80%); photos see less (10-30%)
  • For photographic PNGs that are still too large, consider converting to WebP or JPG

PNG compression vs. format conversion

Lossless PNG compression has limits; sometimes changing format is more effective.

  • Use Compress JPG when working with photographs that can tolerate lossy compression
  • Use Image to WebP when modern lossy or lossless compression yields better results
  • Use Resize PNG when reducing pixel dimensions is more effective than compression alone

FAQ

Frequently asked questions

How much can a PNG file be compressed?

PNG compression results vary widely depending on image content. Simple graphics with limited colors and large solid areas can often be reduced by 50-80 percent through optimization. Photographs and complex images typically see more modest reductions of 10-30 percent. PNG is lossless, so compression never discards pixel data; it finds more efficient ways to encode the same information. For dramatic size reduction of photographic PNGs, consider converting to JPG or WebP instead.

Does PNG compression affect image quality?

No. PNG uses lossless compression, meaning every pixel is preserved exactly regardless of the compression level. The file size reduction comes from more efficient encoding patterns, not from discarding visual data. You can compress, open, edit, and re-save a PNG file indefinitely without any quality degradation. This is the primary advantage of PNG over lossy formats like JPG and WebP lossy mode.

What is PNG-8 and when should I use it?

PNG-8 uses a palette of up to 256 colors, similar to GIF, which can produce much smaller files for simple graphics like icons, logos, and flat-color illustrations. PNG-24 (the standard) supports up to 16.7 million colors and is better for photographs, gradients, and complex images. If your image has limited colors, converting to PNG-8 can significantly reduce file size without visible quality loss. This tool produces standard PNG-24 output.

Why is my PNG still large after compression?

If a PNG file remains large after optimization, it likely contains photographic content, complex gradients, or millions of unique colors that do not compress well with lossless algorithms. In these cases, converting to WebP lossy or JPG will produce much smaller files, though with some quality loss. For screenshots and graphics, check whether the image can be reduced to a limited color palette (PNG-8) or whether unnecessary metadata and embedded profiles can be stripped.

Related

Short paths into the nearest related tasks.