What it is - A unique extension which controls browser state to maintain user focus via tab locking, tab limiting, and site banning.
1. Lock a tab in a window, Prevents you from changing tabs in a window. Useful if you need to provide undivided attention to something.
2. Limit total tab count, maybe if you get distracted easily by opening too many tabs and are a bad multitasker.
3. Restrict ability to visit certain sites, Automatically closes tabs that visit restricted URL's.
Lockin - Productivity Chrome Extensionmaintain focus via tab locks, tab limits, and site bansMar 2026