ImageOptim

ImageOptim is a tool designed to reduce image file sizes without affecting visual quality. It strips unnecessary metadata and optimizes compression to improve loading performance on websites and in applications.

★★★★★

5.0(1 ratings)

• Lossless compression. ImageOptim applies advanced algorithms to reduce the size of PNG, JPEG, and GIF files without altering image quality. Colors and details remain intact while redundant data is removed.
• Metadata removal. The tool deletes hidden information such as EXIF data, color profiles, and comments, which reduces file size without affecting the visible image.
• PNG optimization. Uses tools such as OptiPNG, PNGCrush, and AdvPNG to find the best combination of compression parameters for PNG files, achieving significant reductions.
• JPEG optimization. Tunes JPEG compression using mozjpeg and jpegoptim, preserving visual quality while reducing file size.
• GIF optimization. Converts GIFs to more efficient formats when possible and applies lossless compression to preserve the animation and colors.
• Batch processing. Lets you drag and drop multiple files or folders to optimize them simultaneously, saving time on projects with large numbers of images.
• Finder integration. On macOS, ImageOptim integrates directly into the Finder context menu, providing quick access from the file browser.
• Minimalist interface. No complex configuration is required. Users drag images into the window and optimization happens automatically.
• SVG support. In addition to raster formats, ImageOptim can optimize SVG files by removing redundant nodes and unnecessary whitespace.
• Visual comparison. Shows a before-and-after preview of the optimization, letting you verify that there is no perceptible loss of quality.
• Advanced settings. Offers options to control the compression level for each format, allowing you to balance size and quality according to your needs.

ImageOptim was created by Kornel Lesiński in 2009. The program is written in Objective-C and uses a combination of open-source tools such as Zopfli, PNGOUT, and other compression algorithms. Its development remains active, with regular updates to improve compatibility with new formats and optimization techniques. The application is compatible with macOS, and an online version also exists for other operating systems.

Alternatives to ImageOptim:

For ImageOptim there are 2 alternative programs. Free: 1, paid: 1.

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