Hi,
Many monitors are unevenly lit, a corner, an edge or the center is brighter than the rest. It's easy to see on a white background.
I wrote a small free utility for Windows 10/11 that fixes this in software. It puts a transparent, click-through layer over the screen and darkens only the areas that are too bright, so the screen looks more even.
I have used it for several years with my Dell U2417H, which has a bright spot in the center of the screen.
- Easy setup: set the dimming for 9 screen zones, with a live preview.
- For advanced users: load your own grayscale mask (BMP).
- Works in all programs. No noticeable effect on speed.
- Turns off automatically in fullscreen games and doesn't appear in screenshots.
- Free and open source (MIT). Portable, no installation. Digitally signed (by WnSoft).
Note: it fixes brightness only, not color tints, and only on the main monitor.
Download (Windows 10/11):
https://github.com/Aleksid1/FixMonitorUniformity/releases/latest/download/FixMonitorUniformity.exe
More info and screenshots:
https://github.com/Aleksid1/FixMonitorUniformity
Igor