GIMP

With the aid of predetermined publication workflows, artists, graphic designers, and photographers may produce and modify paintings, pictures, and other visual works using the open-source image editor GIMP. Businesses may utilize its customisable interface to alter widget themes, icon sizes, colors, spacing, and more.
Photo improvement, digital retouching, preview mode, several file formats, and data export are among the key features. It features a channel mixer that enables experts to use filters in a corrective mode to remove lens tilt effects and distortions across photos. Users may also alter an image's active layer with the crop tool and utilize the auto-shrink feature to find the boundary.
It is freely accessible, and help is provided through tutorials and documentation.