---
title: "Free PNG Image Compressor — Nexvert"
description: "Compress PNG images while retaining transparent layers and crisp details. 100% local browser processing."
url: https://nexvert.online/png-compressor/
---

# Free PNG Image Compressor

Compress PNG images while retaining transparent layers and crisp details. 100% local browser processing.

## What is PNG Image Compressor?

PNG files often carry heavy byte weights because of 32-bit RGBA color palettes. Our in-browser PNG compressor uses color quantization and alpha channel dithering to reduce palette sizes while maintaining clean, anti-aliased transparency.

## How to use PNG Image Compressor

1. **Add your file or input** — Choose a supported file, drag it onto the upload area, or type/paste the data this tool works with.
2. **Adjust the options** — Pick the output format, quality, size or other settings the tool offers. Defaults work well for most files.
3. **Process and download** — Run the tool and save the result. Processing happens in your browser, so nothing is uploaded to a server.

## Frequently asked questions

### How does PNG compression reduce file size while keeping transparency?

The optimizer reduces the color palette from millions of shades to an optimized 256-color palette (PNG-8 with alpha) or optimizes scanline filtering prior to Deflate compression.

### Will text and lines in my screenshots remain sharp after PNG compression?

Yes. PNG compression excels at preserving sharp high-contrast edges in typography, screenshots, diagrams, and logos without the ringing artifacts characteristic of JPEG.

### Is there a limit on how many PNGs I can optimize in one session?

No. You can compress as many PNG files as your device memory allows with zero daily quotas or paywalls.

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Source: https://nexvert.online/png-compressor/
HTML version: https://nexvert.online/png-compressor/