Free desktop software for Windows. These are proper native programs, not web pages in a wrapper: small downloads, no installer to sit through, no account to create and no subscription. Download the zip, unzip it, run it.
Windows
Screen Dimmer & Blue Light Filter
Two separate controls in one 39 KB program. The blue light filter warms your screen’s colours using the display’s own colour curve, so blacks stay black instead of going washed out. The screen dimmer turns the real backlight down and then keeps going past the minimum your monitor allows on its own, which is the part most dimmers cannot do.
Works on Windows 10 and 11, on laptop screens and external monitors, with a separate slider for each display. It stays out of screenshots and screen shares, pauses itself for fullscreen games and photo editing, and cannot get stuck too dark to fix. Read more and download it free.
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