NVIDIA nvis is a viewer that can be used for displaying images and video streams. It can also display certain types of EXR-formatted images. The viewer can accept either input streams or direct user interaction with the program. it can facilitate image and image stream comparisons which can be of browser-compatible images, or EXR images.

The program can accept shader-based input. Shaders can implement any type of function, and the accompanying JSON user interface description allows for interactive adjustment of shader parameters. It can read the files in a directory, and accept a file name to open it, or accept a URI as input.