Paint.NET in the context of JPEG XR

A Photoshop contest, or sometimes Photoshop battle (often abbreviated to PS Battle), is an online game, in which a website or user of an Internet forum will post a starting image — usually a photograph — and ask others to manipulate the image using some graphics editing software, usually Adobe Photoshop, however other editors are commonly allowed, such as Corel Photo-Paint, GIMP, PaintShop Pro, Paint.NET or even Microsoft Paint. People can also use video editing software to create these images, such as Adobe Premiere Pro, Kdenlive, OpenShot, or NCH VideoPad.

While Photoshop is the industry standard image editing program, Adobe Systems, the publisher of Photoshop, discourages use of "Photoshop" to refer to anything other than their photo editing software, to prevent their trademark from becoming generic.