Paintbrush

Paintbrush is a lightweight bitmap editor designed specifically for macOS, offering a straightforward interface for creating and editing simple images. It supports opening and saving a range of common formats such as BMP, PNG, JPEG, TIFF, and GIF, and provides full transparency handling for formats that include an alpha channel, notably PNG and GIF. Users can also paste images directly from many Mac applications, including Microsoft Office and Apple iWork, facilitating quick transfers of visual content.

The tool focuses on basic image‑manipulation tasks rather than advanced compositing, making it suitable for quick cropping, adding text, or casual doodling. Its UI presents a minimal set of drawing tools and color selection options, allowing users to start editing without a steep learning curve. Because it is open‑source and offered as a free tier, Paintbrush can be freely downloaded, modified, and redistributed, while maintaining a stable release status.

Paintbrush positions itself as a modern replacement for the original MacPaint experience, catering to users who need a native, uncomplicated solution for everyday bitmap editing on macOS.