GLview : OpenGL Extensions Viewer 6 | realtech VR

GLview is a reliable PC application that provides users with valuable information about their current OpenGL 3D accelerator. With this program, users can easily access details such as the vendor name, implemented version, renderer name, and extensions of their current OpenGL 3D accelerator.

GLview is an essential tool for developers and users who want to optimize their graphics performance and ensure the smooth operation of their system. By providing accurate and up-to-date information about their 3D accelerator, GLview enables users to make informed decisions and take appropriate action to enhance their system's performance.

Whether you're a gaming enthusiast or a professional developer, GLview is an indispensable tool that will help you get the most out of your system's graphics capabilities. With its user-friendly interface and reliable performance, GLview is the perfect choice for anyone looking to optimize their graphics performance.

New version 6.0 for Windows, now available, 20th Anniversary of OpenGL Extensions Viewer, with CPUID
New version for Mac, CPUID, and Apple Silicon native support, Metal and other improvements.

Check our FAQ question, updated (November 2021).

What's new ?


6.4.3 - Latest Version (2023-09-15)
- Support for non standard installation path.
- Updated to Visual Studio 2022
- Updated database.

- Fast database loading with a new format.
- Improved texts and french translation,
- Improved vulkan rendering tests.
- New application icon.
- Updated database.

- Updated DirectX 12 and Shader Model detection (up to 6.7)
- Other bug fixes and improvements.

- Added sRGB and Linear framebuffer for Vulkan and OpenGL rendering tests.
- Other bug fixes and improvements.

- Fix accents in portuguese language.
- Updated vulkan rendering tests and compliance
- Other bug fixes and improvements.

- Changed debug.log to glview.log
- Added more information on failed rendering context not being initialized
- Other bug fixes and improvements.

- Address issue with GDI only devices.
- Address HDR rendering test on Vulkan

- Added Vulkan rendering tests!
- Optimization in GL rendering tests.
- Added command line parameter glview.exe -fast, for loading the UI without the GL database.

- Address compability with nVidia when starting the rendering tests without multisampling.

- New OpenGL code, and preparing for Vulkan rendering tests
- Translation to russian, french in the PC version.
- Android version has now CPU reporting and Vulkan reporting.

- Android Vulkan Database
- Support for virtual renderer (without monitors)
- Vulkan extensions database browser.
- Entirely rewritten interface in WPF, optimized for Windows 10, search functions, new high definitions icons, new vendors icons and more.
- Vulkan extensions database browser
- New generated database, up to 10,000 renderers, with version and more
- Faster loading times,
- New CPUID section with processor name and number.
- Many bug fixes and improvements.

- Updated video memory size using AMD and nVidia GL Extensions. This now reports more than 4GB size. Adding GPU processor clock for AMD video cards.
- nVidia and AMD drivers version are now reported properly.
- Fixed an issue with WMI 'AdapterRAM' crashing at startup.
- Improved database navigation.

5.2.0 (2019-03)

- Updated processor detection : Added more processor family.
- Version is displayed when starting the application.
- Improved database navigation.

5.1.4 (2019-01)

- Improved Vulkan Support
- Support for high density screens
- Improved database


OpenGL Extension Viewer is reliable software that provides information about the current OpenGL 3D accelerator, including the vendor name, implemented version, renderer name, and extensions. Many OpenGL extensions and extensions to related APIs like GLU, GLX, and WGL have been established by vendors and groups of vendors. The extension registry, which is maintained by SGI, contains specifications for all known extensions, written as modifications to appropriate specification documents. Additionally, the registry defines naming conventions, guidelines for creating new extensions and writing suitable extension specifications, and other relevant documentation.

OpenGL Extensions Viewer is a free-of-charge software that has been recognized by Softpedia as a 100% free and safe from spyware, adware, and viruses. If you want to download the latest version of OpenGL Extensions Viewer (GLview), you can do so for free from selected stores.

Or, if you run Windows 7 or later, click here to download for Windows:

Download For Windows
SHA-256 Checksum: glview640-setup.exe 80A09FB79D1861E74310008AED9E4F26C492AF3016AC0620E6626E2BDD58D609

Also available, DirectX Extensions Viewer on Windows Store

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Official OpenGL Extensions Viewer Facebook page >>>

A Question ? Ask on OpenGL reddit page, we will now answer ! >>>


After launching the application, select one of the following tab:
Display Modes
Pixel Format

Display system information and core feature test.

Display extensions, sorted by vendor. If you have an Internet connection, you can retrieve from the extensions's specifications that explain the available extensions. You can click on extension and press 'Search' for getting extension's specification from severals different databases. You can also use the left button mouse.

Display Modes
Display all supported display modes.

Pixel Formats
Display all supported pixel format
Create a report based from current configuration.

The OpenGL diagnostic tool performs some OpenGL initialisation and graphical test. It will use the desktop resolution. So in case of slow downs or initialisation errors, use a smaller desktop resolution. 

OpenGL 1.1 : use the standard OpenGL without extension usage.
OpenGL 1.2 : OpenGL test using GL_lock_array and glDrawElement.
OpenGL 1.3 : OpenGL using GL_lock_array and multitexturing.
OpenGL 1.4 : OpenGL test using GL_lock_array and multitexturing using a DOT3 shading and an ARB vertex program code.
OpenGL 1.5 : OpenGL test using Vertex Buffer Object.
OpenGL 2.0 : OpenGL test using a GLSL 1.0 program.
OpenGL 2.1 : OpenGL test using pixel buffer object.
OpenGL 3.0 : OpenGL test using OpenGL 3.0 Forward Context (only supported under Windows). 
 execom / main code.
arekkusu / cocoa code.
genevois / web site / graphist.

Here a list of useful links, related to OpenGL Extensions and Programming:
Apple' s OpenGL Extensions Guide
OpenGL® Extension Registry
Delphi3D PC OpenGL Hardware Registry
Understanding and Detecting OpenGL Functionality
MacOS X OpenGL information



A very extensive list of details of all extensions available of your system, which OpenGL functions are implemented and more.
A core feature set check also show how well from OpenGL version 1.2 to 4.0 are implemented in your system.
More than 450 extensions reported and collected since 2000!

OpenGL 1.1 / 1.2 OpenGL 1.3

OpenGL Extensions Viewer has been suggested by
in the OpenGL technical FAQ (see 23.050) (**)
and by nVidia as Developer Resources.

Vulkan Extensions are available in the Vulkan Report Section

OpenGL 1.1 / 1.2




A database of all known renderers for Windows and MacOSX is available. If an renderer is being updated, you can submit to the server. You can also update to the latest database directly from the application.

OpenGL 1.1 / 1.2 


Q> I can't find the driver to load for my software that requires OpenGL 2.1. What should I do?
A> You can't download OpenGL itself, but you can download display drivers that include OpenGL. Check the version displayed by OpenGL Extensions Viewer. If it shows 'GDI Renderer', it means that something is preventing OpenGL from working. Sometimes, setting an environment variable with QT_OPENGL can resolve the issue.

Q> Will the version of OpenGL Extensions Viewer that reports '4.613572 Core Profile Compatibility 19.11.1' work for Blend, which requires OpenGL 3.3 or above?
A> Yes, it will work. The version number is the first set of figures in the version name, and in this case, it is 4.6.

Q> I downloaded the latest version of OpenGL to play a game that requires OpenGL 2.1 or above, but it only shows version 1.1 when I open it. What's wrong?
A> This means that something is preventing OpenGL from working. For example, opening an OpenGL software remotely or through a virtual machine usually doesn't work. Check OpenGL Extensions Viewer to see which version is installed, particularly the DirectX version. If you have DirectX 11, there is a good chance that OpenGL is compatible, but a software or resolution issue may be blocking it.


Initial released in 2000
Available for iOS, Android, Windows 7 and above, macOS