Focus Blocker & Distraction Domain Filter
The problem: Browser-based site blockers are easily bypassed with two clicks, failing to prevent impulsive social media browsing.
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Focus Blocker & Distraction Domain Filter: the complete guide
The Focus Blocker and Distraction Domain Filter Generator converts your list of time-wasting websites into system-level /etc/hosts sinkhole entries, uBlock Origin adblock filter rules, and clean JSON arrays. Take control of your digital environment during deep work sprints by redirecting algorithmic feeds, social networks, and clickbait portals to local zero-routes (0.0.0.0) without paying for third-party screen time applications.
System-Level DNS Sinkholing vs. Browser Extensions
Most browser-based website blockers can be effortlessly disabled with two clicks in extension settings whenever an impulse strike occurs. In contrast, routing distracting domain names to 0.0.0.0 via your operating system's hosts file creates a friction barrier that applies across all browsers, background processes, and incognito sessions.
When your operating system attempts to resolve a blocked domain, the local hosts file intercepts the DNS lookup immediately, returning an unreachable address in under 1 millisecond without generating network traffic or battery drain.
Handling Apex Domains and Wildcard Subdomains
Blocking a site like 'reddit.com' often fails to block 'www.reddit.com', 'old.reddit.com', or mobile app API subdomains. Our generator automatically pairs every domain with its corresponding www variant and generates syntax-compliant rules for multiple blocking ecosystems.
Choose between operating system /etc/hosts syntax (compatible with macOS, Linux, and Windows), uBlock Origin filter rules (for granular browser-only blocking), or structured JSON arrays for custom firewall automation scripts.
Step by step: how to use Focus Blocker
- 1
Paste or type the website domains you wish to block into the text editor (one per line).
- 2
Click 'Common List' to quickly populate standard distraction sites like Reddit, Twitter/X, and YouTube.
- 3
Check 'Auto-generate www.* subdomains' to guarantee complete URL coverage.
- 4
Select your output tab: /etc/hosts, uBlock Filters, or JSON Array.
- 5
Click 'Copy' or 'Download' and follow the quick platform instructions to apply the blocklist.
Security & privacy
Domain normalization, duplicate removal, and configuration formatting run 100% locally in your browser memory. Your personal browsing blocklists are never recorded.