Virtual HDR OSD for Windows 11 is a lightweight Windows 11 HDR profile editor designed as a software counterpart to the controls that many monitors disable when HDR mode is enabled.

Features

  • Real-time HDR ICC/ICM profile editing with Live Apply
  • Software OSD for HDR monitors with locked hardware controls
  • Gamma, brightness, contrast, white balance, tint, RGB and saturation adjustments
  • SDR-in-HDR gamma 2.2 correction for Windows 11
  • Automatic SDR/HDR profile switching and recovery
  • Standalone watchdog for the Windows 11 profile-association bug
  • Multi-monitor support
  • Create an HDR profile from your display’s reported panel data, or continue using an existing profile.
  • Follow a four-step calibration guide: Black level → Peak white → Full-frame white → Gamma match, with an option to skip steps.
  • Browse additional patterns separately from the guided workflow.
  • Check gamma with fixed reference rows, an adjustable target and a fine custom reference slider. Profile Gamma, Brightness and Contrast controls are available in the same step.
  • Use optional ArgyllCMS/colorimeter measurements for white balance, a 33-point greyscale ramp and sustained full-screen luminance.
  • Review effective BT.709, Display P3 and BT.2020 gamut coverage through the current HDR setup.

Project Samples

Project Activity

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Categories

Image Processing

License

GNU General Public License version 3.0 (GPLv3)

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Additional Project Details

Operating Systems

Windows

Intended Audience

Advanced End Users

Programming Language

Python

Related Categories

Python Image Processing Software

Registered

2026-08-13