Free Mac software for PNG and JPEG fast optimization

ImageOptim for Mac

ImageOptim 1.7.1

  -  1.45 MB  -  Open Source

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of ImageOptim 1.7.1.

For those interested in downloading the most recent release of ImageOptim for Mac or reading our review, simply click here.

All old versions distributed on our website are completely virus-free and available for download at no cost.

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  • ImageOptim 1.7.1 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    ImageOptim 1.7.1 Screenshot 1
  • ImageOptim 1.7.1 Screenshot 2
  • ImageOptim 1.7.1 Screenshot 3

What's new in this version:

- Added new languages: Arabic, Finnish, Slovak, Ukrainian
- Minor updates to SVGO, PNGOUT

Added experimental Guetzli optimizer:
- It's off by default (enable in Preferences), because it's very slow: 1 minute + 200MB RAM per megapixel. It is normal for a large photo to take 10 minutes and gigabytes of memory
- It's ineffective on JPEGs with quality 85 or lower. It's best to create JPEGs with 100% quality for running Guetzli on them
- Guetzli does not support color profiles, so only use sRGB
- Running Guetzli on the same image twice is not recommended, as it will decrease quality more than it reduces the file size. If you need smaller files, disable Guetzli, and enable Lossy mode instead