Release Notes are here.

Processor and RAM requirements are minimum recommendations. In general, “more” and “faster” are desirable when contemplating these system resources.

More disk space is needed for image storage, and temporary disk space is needed during conversion, compression, and decompression. The amount of disk space required depends on your images. Faster hard drives, large disk caches, and SSD or hybrid drives will improve application performance.

Windows

Final version:

1.0.5 (released 28 November 2018)

• Windows 7 SP1 or Windows 10
  SquishPic is a 64-bit application and requires a 64-bit version of Windows.
• 4GB RAM
• 2.0GHz or faster Intel Core i5 or better processor
• 300MB disk space for application
• 1280×800 or higher resolution display

Macintosh

Final version:

1.0.5 (released 28 November 2018)

• OS X 10.11 or later
• 4GB RAM
• 2.0GHz or faster Intel Core i5 or better processor
• 300MB disk space for application
• 1280×800 or higher resolution display

Linux

Current version:

1.0.5 (released 28 November 2018)

• Current or recent (as of October 2018) desktop release of CentOS, Fedora, Linux Mint, Red Hat Enterprise Linux, or Ubuntu.
  Distros based on these versions, and other x86 distros that support appimages should also work but are not officially supported.
  SquishPic is a 64-bit application and requires a 64-bit operating system.
• 4GB RAM
• 2.0GHz or faster Intel Core i5 or better processor
• 300MB disk space for application
• 1280×800 or higher resolution display