Any differences between them appear highlighted to make individual changes easier to see.
To start a comparison, click the File module and select your files from Finder.
On first launch, the app gives you an option to choose a comparison module. It has many customizable settings to make file comparison quick and easy. The user interface is intuitive and neatly packs all its functions into a handy menu. Meld is a simple, cross-platform diff and merge tool.