IES viewer

IESviewer is freeware!

The latest release of IESviewer (Version 3.5) is available now!

IESviewer is the world's most popular photometric viewer. It lets you quickly view, find and convert photometric data files.1

Most of the features present in other viewers are present in IESviewer, including:

Additionally, IESviewer support:

1 - The photometric data files (IES, LDT) commonly used by lighting fixture manufacturers to distribute photometric information about their products.