imgcompare
imgcompare is a visual diff utility for images; useful for quickly determining whether or not two images are pixel-identical. Comparisons are performed in the rgba color space, support for explicitly specifying the comparison domain will be coming in a future version (see below).
Usage
Usage is straightforward. Given two image files of supported formats (for example, image1.png and image2.jpg), the command imgcompare image1.png image2.jpg can be used to determine whether the two images are pixel-for-pixel identical. An exit code of 0 means the images are identical, while a non-zero exit code indicates that one or more differing pixels were found between the provided images.
Installation
imgcompare is available for installation on supported platforms via the cargo package manager:
> cargo install imgcompare
Pre-compiled, signed binaries for select platforms are available from the imgcompare homepage at https://neosmart.net/imgcompare/
Future Development
Currently, imgcompare is a binary diff utility in the sense that it only returns whether or not two images are identical. imgcompare does not currently support "perceptual hashing," and does not (yet) tell you just how dissimilar two images may be.
- Perceptual hashing/fuzzy diff
- Support for more filetypes
- Support for explicitly providing color space used for pixel comparison
License & Credits
imgcompare is open source, published under the terms of the MIT license. imgcompare is developed and maintained by Mahmoud Al-Qudsi <mqudsi@neosmart.net> of NeoSmart Technologies <https://neosmart.net/>. imgcompare would not be possible without the existence of countless other open source libraries, graciously published for the community to benefit from and build upon.