Icon of program: ImageAlpha

ImageAlpha for Mac

By NotACompanyFreeUser Rating

Key Details of ImageAlpha

  • Converts 24-bit PNG to paletted 8-bit with full alpha channel.
  • Last updated on February 11, 2014
  • There have been 7 updates
  • Virus scan status:

    Clean (it's extremely likely that this software program is clean)

Enlarged image for ImageAlpha

Editors' Review

Download.com staff

With its ability to modify certain images and compress them for viewing quickly on the Web, ImageAlpha for Mac may help those who publish photos or operate a blog. Unfortunately, it only works with PNG formatted images, limiting its overall utility.

ImageAlpha for Mac opens into its basic main interface after a quick download. The menu includes no graphics and looks very dated, but that didn't impact the app's operation. The user must drag a photo image file into the main rectangular window to import it to the program. This brings up an enlarged view of the photo, but with an additional background. Tiles along the left side give the user several options to change the background image, but these are limited and have a poor quality. A slider in the lower left allows the user to change the color resolution. Additional buttons to the right allow changes to the style of the image shading. A final slider allows the user to enlarge or shrink the image on the program's background. Unfortunately, the program only works with PNG files, so you won't be able to use any images in other popular formats.

ImageAlpha for Mac may be an acceptable application for basic modifications and compressions for Web use for users who do not need to work with multiple image file formats.

What's new in version 1.3.5

  • Fixed Optimize with ImageOptim checkbox
  • Upgraded to pngquant 2.0.0
  • New lossy PNG algorithm

    Explore More

    Full Specifications

    February 11, 2014
    Latest update
    February 11, 2014
    Operating System
    OS X 10.8, Mac OS X 10.7, Mac OS X
    Additional Requirements
    Total Downloads
    Downloads Last Week

    Related Software

    Developer's Description

    Converts 24-bit PNG to paletted 8-bit with full alpha channel.
    ImageAlpha converts 24-bit PNG to paletted 8-bit with full alpha channel. This greately reduces file sizes with only minor loss of quality. Such images are compatible with all browsers, and even degrade well in IE6. ImageAlpha can achieve conversion quality better than Adobe Fireworks by employing latest pngquant, pngnq-s9. Even images that need more than 256 colors can be made more compressible using special alpha-channel-aware posterizer.