Pixelmator features selection, painting, retouching, navigation, and color correction tools; as well as layers-based image editing, GPU-powered image processing, color management, automation, and a transparent head-up display user interface for work with images.

[6] Pixelmator Classic doesn't support image stitching for multi-exposure HDR capture, focus stacking, or panoramic photography.

1.6.2 (released on October 6, 2010), introduces support for the image format WebP.

3.2.1 makes the switch to the OpenGL Core Profile and resolves some previous bugs.

3.3.1 adds the ability to pinch to zoom in a document window and to scroll through shapes, gradients, and styles within their respective palettes.