TimeFocuser — In-Browser Site Firewall

Firewall-grade website blocker with time-based schedules, tamper-resistant security, and locked settings during focus periods.

🚀 Reclaim Your Focus with TimeFocuser — The In-Browser Site Firewall That Cannot Be Cheated. Most website blockers fail for one simple reason: whenever you feel an impulsive urge to procrastinate, you can easily disable or delete the blocking rule in two clicks. TimeFocuser solves this with strict anti-circumvention: during active focus sessions or scheduled working hours, all settings and rules are strictly LOCKED. You cannot turn off or delete rules mid-session until your focus period is over. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🛡️ KEY FEATURES • Strict Anti-Bypass Lockdown When a focus window or schedule is active, the dashboard enters lockdown mode. You cannot impulsively disable rules or shorten timers until the session completes. • Granular Firewall Matching Block entire domains (e.g. reddit.com, instagram.com), exact URLs, wildcard patterns (*://*.youtube.com/shorts*), or advanced regular expressions. • Flexible Scheduling - Weekly Schedules: Set recurring hours for workdays (e.g., Monday–Friday from 09:00 to 18:00). - Countdown Timers: Quick deep-work focus sprints (15m, 25m Pomodoro, 60m, or custom duration). - 24/7 Perpetual Blocks: Permanently eliminate toxic digital habits. • Tamper-Resistant Security Rules and state are protected with AES-256-GCM encryption and HMAC-SHA256 integrity verification stored in browser IndexedDB via non-extractable Web Crypto keys. • Dual-Layer Network Defense Combines declarativeNetRequest (instant network-level blocking before pages load) with smart navigation fallbacks. • 100% Private & Serverless Zero tracking, zero analytics, zero external servers. Everything runs entirely offline inside your own browser. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ⏱️ HOW IT WORKS 1. Add Your Rules: Open the TimeFocuser dashboard and add the websites you want to restrict along with your desired schedule. 2. Engage Focus: When your scheduled window arrives or you start a focus timer, the firewall activates. 3. Stay Focused: Any attempt to access restricted sites will be redirected to your calming block screen, and rules cannot be altered until the session ends. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔒 PRIVACY & PERMISSIONS TimeFocuser respects your privacy above all else. Your browsing habits and blocklists never leave your device.