Support
Write to supportlap478@gmail.com. Real replies, from the person who wrote the app.
Turning Dim on
Open Safari → Settings → Extensions, and tick Dim. Safari will ask which websites it may run on; choosing “Every Website” is the simplest, and you can narrow it later.
A page looks wrong
Click the Dim button in Safari's toolbar and choose Off. Dim will stay off for that site and remember it. You can also try Site's own, which uses the website's built-in dark theme when it has one.
If you tell us which page it was, we will look at it. Most reports of this kind turn into a fix.
A website already dark got darkened again
Dim checks whether a site has its own dark theme and leaves those alone. That check runs once per site, the first time you visit it. If it got the answer wrong, switch that site to Site's own from the toolbar button.
Images look too bright
Photos and videos are deliberately not inverted — otherwise they would look like negatives. An image with a white background can still glare on a dark page. The Images slider in the Dim button dims them.
Dim doesn't follow my Mac's appearance
Open Dim's settings and choose Follow the system. Dim will then switch with macOS. There is also a schedule option if you prefer fixed hours.
My settings didn't appear on my other Mac
Settings sync through iCloud, which requires Safari syncing to be enabled in System Settings → Apple Account → iCloud. Without it, Dim keeps everything locally and works exactly the same.
Refunds
Purchases go through Apple, so refunds do too: reportaproblem.apple.com. Tell us as well if something didn't work — we would rather fix it.