DiffImg Portable

Made as the portable counterpart of DiffImg, this is a simple-to-use software utility that lets you compare image files to spot any differences. It is wrapped in a fun and interactive interface that features some advanced settings.

Thanks to the fact that installation it not necessary, you can extract the program files to any part of the disk and simply open the executable file, as well as do the same thing when copying it to a mass storage device to run it on any PC you come in touch with.

A more important aspect worth mentioning is that, unlike most installers, this tool doesn't modify the Windows registry configuration, so it doesn't increase the risk of system stability issues.

At startup, you are greeted by a small dialog that asks you to establish the base image file and photo to compare it to. There are numerous file types supported, such as .bmp, .gif, .ico, .jpeg, .png, .tga and .tiff.

You can check out the two pictures separately or side by side, overlap them, zoom in and out, view a pane with just their differences, adjust the gain and offset, write comments, examine a histogram, as well as investigate technical properties, such as pic dimensions, resolutions, format, along with minimum and maximum errors.

As far as app customization goes, you can change the UI language and measurement unit, tweak the error mask opacity, allow image differences and set the discriminating character together with the threshold, find out all supported image formats, or check out log details.

No error dialogs were shown in our tests, and the software utility didn't freeze or crash. Its impact on system performance was minimal, since it used low CPU and RAM to work properly.

DiffImg may seem easy, but it actually takes some advanced knowledge to be able to tweak settings when it comes to comparing two image files at a technical level.