VisionCircadian

VisionCircadian 1.1.0 tracks how stimulating your screen light is for your body clock. It measures the Circadian Stimulus (CS) of whatever webpage you're on — factoring in the colors on screen, how long you've been on that tab, and the time of day. The score updates live and is shown as a badge on the extension icon. - Green (low) — minimal effect on your sleep cycle - Yellow (moderate) — some alerting effect - Red (high) — strong melatonin suppression; consider dimming or a warmer screen tone The popup also shows color temperature (warm vs. cool light), raw melanopic light level (CLA), and tab exposure time — each with a hover tooltip explaining what it means. Each tab keeps its own history until you close it.