The 1.3 version of ImageSize for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this software for Mac is Day 1 Software.
The software lies within Design & Photo Tools, more precisely Converters. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
Resize, convert and rename thousands of image files in batch mode with ImageSize. Resize your images to reduce their size on disk and optimise them for a specific usage like sending via email or posting online. Also, if your original image files are poorly named, you can use ImageSize to give them meaningful names so they are easier to find and identify.
You may want to check out more Mac applications, such as Image Size Reducer Pro, which might be similar to ImageSize.
Converters
Converters