Free Online Tool

Compress PNG Online Free

Compress PNG files online for free. Reduce PNG file size by up to 80% without losing transparency or sharpness. No signup, no upload to servers. Instant download.

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PNG files are large by nature — lossless compression preserves every pixel, which is great for quality but costly for file size. Compressing a PNG means reducing redundant data while keeping transparency and sharpness intact. Glopix uses pngquant-style quantization and metadata stripping to reduce PNG files by up to 80% without visible loss.

Step-by-Step Guide

  1. 1

    Upload Your PNG

    Drag and drop your PNG file or click to browse. Supports any PNG size up to 10MB on the free tier.

  2. 2

    Set Compression Level

    Choose your compression strength: light (lossless metadata strip), balanced (recommended), or maximum (palette quantization for smaller files).

  3. 3

    Download

    Click Process and download your compressed PNG. Transparency is fully preserved.

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Frequently Asked Questions

How much can I reduce PNG file size? expand_more

Losslessly, typically 20–40% via metadata removal and better compression tables. With palette quantization (lossy), up to 80% for graphics with limited colors.

Does PNG compression remove transparency? expand_more

No — Glopix PNG compression preserves the alpha channel. Your transparency remains intact after compression.

Is it better to convert PNG to WebP than compress PNG? expand_more

Often yes — WebP with transparency achieves significantly smaller files than even optimized PNG. Convert at /imagetools/webp/.

Compress PNG Online Free

100% free. No signup. Works in your browser.

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