What AImKeeper does
Close the sites you already know about. For everything else, write a goal and AImKeeper checks the page.
Block any site
Add the sites that pull you in and they stay closed. Block a whole site, or only the part you lose time on, like YouTube Shorts or Instagram Reels.
Block by what's on the page
A list can't name every site, and a site you need still has pages you don't. Write what you're trying to do, and a Monitor checks each page against it. The lecture stays open, and the clip next to it gets covered. If it gets one wrong, override it, or choose a warning instead of a block.
Schedules, breaks, and locks
Run a block all the time, for a set amount of time, or on a weekly schedule. Give yourself a few short breaks a day. Lock it so you can't switch it off early, or add a password that someone else keeps.
Private by default.
Blocks run entirely on your computer and need no account. Monitors only look at the sites you choose, and a checked page's screenshot is used for that decision and not saved.