DiffImg is an open-source image comparison tool written in Qt, used for comparing two images and displays the positions where the pixels differ. Among others, it has an intuitive interface, using OpenCV as backend and has support for comparing 8/16/24/32 bits BMP, PNG, JPG, Tiff, OpenExRimages images.
Supported files :DifffImg uses Qt plugins to load images, so by default it can read basic formats as BMP, PNG, JPG and OpenCV supported formats (Tiff, OpenExR). Some YUV format is also take into account.
The latest version available is DiffImg 2.2.0, which has been released a while ago. For more information, see the official website.