ScrollBrake от spd

ScrollBrake helps you set time budgets for distracting sites and automatically locks them for a short break when the limit is reached.

It includes built-in support for Facebook, Instagram, X, and YouTube, and it also lets you add your own custom domains.

ScrollBrake tracks active usage only while a page is visible and focused. All settings and timer data stay in Firefox’s local extension storage on the current device.

Highlights:

• Per-site usage limits
• Configurable lockout duration
• Support for custom domains
• Popup dashboard and full settings page
• Full-page countdown overlay during lockout
• No analytics, accounts, or server sync