Compress Images Free Online

Compress Image
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Drop JPG or PNG images below. CrunchBox compresses them right in your browser. Adjust quality with the slider.

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    How to Compress Images
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    Why compress images?

    Large images slow down websites, exceed email attachment limits, and waste storage. Compressing reduces file size while maintaining acceptable visual quality.

    How it works

    1. Drop your JPG, PNG, or WebP images into the box above
    2. Adjust the quality slider (lower = smaller file, less detail)
    3. CrunchBox resamples the image at your chosen quality level
    4. Download the compressed version

    Tips

    • 80% quality is a good default — barely visible difference, significant size savings
    • Photos (JPG) compress better than graphics/screenshots (PNG)
    • Original dimensions are preserved — only quality changes