Opait Viewer

Opait Viewer is probably the World's smallest full featured application for viewing PDF documents, images, Office files and more.

A single .NET executable of about 2.5 MB with no installation required!

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Opait Viewer is a 64-bit windows application that depends on .NET version 4.7.2 or higher. If you are running Windows 10 or 11, chances are that you already have the prerequisites installed. There is also a Windows installer version that will properly set up the dependencies and install the viewer in the standard manner.

To download the self-contained single executable that does not require installation, click on the button below:

Download Executable Version 1.8.4 (2.68 MB)

To download a Windows MSI installer, click on the button below.

Download Installer Version 1.8.4 (3.47 MB)

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