Image Ninja Compress, Convert

Compress and convert images

Only for Mac

Free

Mac

Batch convert images to JPEG, PNG & WebP with industry-leading MozJPEG compression. Drag, drop, done. Fast parallel processing, no uploads required. 100% local & private. Image Ninja is the fastest way to batch convert and compress images on your Mac. Drop in your photos, pick your format, and let the ninja work its magic. POWERFUL FORMAT CONVERSION Convert between JPEG, PNG, and WebP formats with a single drag-and-drop. Whether you need WebP for web performance, JPEG for compatibility, or PNG for transparency, Image Ninja handles it all. INDUSTRY-LEADING COMPRESSION Unlike basic converters, Image Ninja uses the same encoding technology trusted by major tech companies: - MozJPEG for superior JPEG compression (up to 10% smaller than standard encoders) - Google's libwebp for optimal WebP output - Smart compression presets so you always know what you're getting SMART COMPRESSION PRESETS No confusing quality sliders. Choose from four clearly labeled levels: - None: Maximum quality, original file size - Low: Best visual quality with slight compression - Medium: Balanced quality and file size - High: Maximum compression for smallest files BLAZING FAST BATCH PROCESSING Convert hundreds of images at once. Image Ninja processes 3 images in parallel, dramatically speeding up bulk conversions compared to one-at-a-time tools. PRESERVES YOUR METADATA Your EXIF data matters. Image Ninja automatically preserves camera information, GPS coordinates, timestamps, and other metadata during conversion. 100% LOCAL & PRIVATE Your images never leave your Mac. No cloud uploads, no accounts, no subscriptions. Everything is processed locally on your machine. CONVERSION TRACKING See exactly what you've accomplished: - Total files converted - Bytes saved across all conversions - Detailed per-file statistics - Complete conversion history INTUITIVE INTERFACE - Drag and drop files directly from Finder - Click to browse and select multiple files - Real-time progress indicators - Light and dark mode support WHO IS IMAGE NINJA FOR? - Web developers optimizing images for faster sites - Photographers batch-processing exports - Designers preparing assets for multiple platforms - Content creators reducing file sizes for uploads - Anyone who needs to convert images quickly FEATURES AT A GLANCE - Input: JPEG, PNG, WebP - Output: JPEG, PNG, WebP, or keep original format - Batch processing with parallel conversion - Four compression presets (None, Low, Medium, High) - EXIF metadata preservation - Conversion history and statistics - No internet required Image Ninja: Professional image conversion made simple.

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The developer, Christopher Kreymborg, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Christopher Kreymborg
Size
10 MB
Category
Utilities
Compatibility
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
Languages
English
Age Rating
4+
Copyright
© 2025 Christopher Kreymborg
  • Privacy Policy

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