Icon of program: DiffImg

DiffImg for Windows

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Editors’ Review

Download.com staff
DiffImg is a straightforward image comparison utility. It highlights pixel differences between two identically sized images using a color mask and provides computed statistics for analysis.
Enlarged image for DiffImg
DiffImg 0/3

  • Pros

    • Displays pixel differences with a color mask overlay.
    • Offers single or dual panel viewing modes.
    • Computes mean error, RMS error, min/max, and error histogram.
    • Supports comparing entire directories of images.
    • Reads basic formats like BMP, PNG, and JPG.

  • Cons

    • Only processes RGB images, ignoring alpha channels and float textures.
    • Requires images to be the same size for comparison.
Icon of program: DiffImg

DiffImg for Windows

Download now

Used DiffImg for Windows?

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Full Specifications

GENERAL
Release
Latest update
Version
2.0
OPERATING SYSTEMS
Platform
Windows
Operating System
  • Windows Vista
  • Windows 7
  • Windows XP
  • Windows 2003
  • Windows 10
Additional Requirements
None
POPULARITY
Total Downloads
257
Downloads Last Week
11
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Developer’s Description

By The Hive
Compare two images and find the pixel difference between the images.
DiffImg is a simple image comparison tool which takes two images with the same size as input. Some statistics are computed and the positions where pixel differs are displayed as a color mask. It is used to check compression level comparison, raytracing parameterization optimization, and non regression tests for 3D engine. DifffImg use QImage as inner format so it has been tested only on RGB image, so alpha channel or float texture aren't take into account. Features include image difference display: a yellow or red mask can overlay the original or modified images, single or dual panel mode, statistic computation: mean error, RMS error, and min/max are computed, histogram of error, "Slideshow": can compare directory of image so you can switch to the previous or next comparison if you have two folders with the same image list, it can read basic formats as BMP, PNG, and JPG, you can add more formats if needed by using bridge plug-ins to the FreeImage or the Devil libraries, and basic batch mode.
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