Pixel (Pixel image format, .px)
The pixel image format (.px) is the image format used by Pixel image editor (formerly known as Pixel32). Pixel image editor is an image editor written by the Slovakian programmer Pavel Kanzelsberger. It is arguably the most notable application written with Free Pascal, though it is not free software. It is often compared to Adobe Photoshop, the most widely used bitmap editor in the printing and graphics industries.
Pixel supports grayscale, RGB, CMYK, CIE Lab and HDR image models, color management, layers, adjustment layers, layer effects, filter effects, web page authoring, photo retouching and animations. A Linux.com review states that Pixel's feature set "rivals that of Adobe Photoshop and outstrips the GIMP in several key areas."
Planned future functionality includes batch file processing, user scripting (to chain multiple effects), a third-party plugin API and support for files as large as 65536 x 65536 pixels.
The evaluation version places watermarks on images and can be used for an unlimited amount of time.