Migraine Mode makes web pages gentler on bad-headache days. One switch (or Alt+Shift+M) dims every tab, adds a soft tint, darkens bright pages, pauses animations and mutes autoplay sound. Save presets, set the hours it turns on and choose the sites where it applies. It works on your device and does not collect your browsing history. Made for people with migraines or light sensitivity who need to keep using their screen.
3 USD/month, with a one-hour free trial. Not a medical device.
A project by Rodrigo Alonso: https://www.linkedin.com/in/rodraalonso/