FocusGuard — Timer & Site Blocker 作者： eyad elghareeb

FocusGuard — Study Timer & Site Blocker

A Firefox extension that replaces your new tab page with a Pomodoro study dashboard, tracks website usage, and blocks distracting sites during focus sessions.

Features

• New Tab Dashboard — Beautiful dark study dashboard replaces your home/new tab page
• Pomodoro Timer — 25/5/15 min sessions (customizable), auto-start breaks
• Site Blocking — Auto-blocks distracting sites during focus sessions using declarativeNetRequest
• Usage Tracking — Tracks which sites you visit and time spent on each
• Weekly Stats — Visual bar chart of your focus time over the past 7 days
• Streak Tracking — Current and best pomodoro streaks
• Emergency Access — 5-minute unblock with auto-re-enable via background alarm
• Quick Popup — Timer controls from the toolbar badge
• Keyboard Shortcuts — Space (start/pause), R (reset), S (skip)
• All Local — No cloud, no accounts, all data stays in your browser

Default Blocked Sites

| Category | Sites |
|-------------|------------------------------------------|
| Social | facebook.com, twitter.com, x.com, instagram.com, reddit.com, tiktok.com |
| Entertainment| youtube.com, twitch.tv, netflix.com |

You can add/remove sites from the dashboard or settings.

Permissions Explained

| Permission | Why |
|----------------------|------------------------------------------|
| storage | Save settings, stats, blocked sites |
| tabs | Track active site for usage stats |
| webNavigation | Detect page loads for tracking |
| alarms | Timer ticks, emergency access timeout |
| notifications | Pomodoro completion alerts |
| declarativeNetRequest | Block sites during focus sessions |
| <all_urls> host | Required for site blocking to work |

Tech

• Manifest V3 (Firefox 113+)
• declarativeNetRequest for efficient site blocking
• Tabs-based fallback if DNR is unavailable
• Delta-based timing for accurate tracking
• Zero dependencies — pure vanilla JS/CSS/HTML

License

MIT