Site Blocker

Block distracting websites and boost your productivity. Manage up to 100 sites with toggle controls and child safety protection — right inside your browser.

Install from Edge Add-ons View on GitHub ♥ Donate

Everything you need to stay focused

Simple, reliable website blocking that works instantly — no fuss, no complexity.

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Block Up to 100 Sites

Add any domain and it’s blocked immediately. Your blocklist is saved locally and persists across browser sessions.

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Individual Toggle Controls

Temporarily pause blocking for any site without removing it from your list. One toggle per domain gives you full control.

Master Switch

Turn all blocking on or off with a single click. Your blocklist is always preserved — just flip the switch.

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Child Safety Math Challenge

An optional math question gate prevents children from modifying the blocklist. Parents solve it easily; kids can’t get through.

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Subdomain Blocking

Blocking facebook.com automatically blocks m.facebook.com, www.facebook.com, and all other subdomains.

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Side Panel Interface

A modern, clean interface that opens in the browser sidebar. No disruptive popups — manage your blocks without leaving your tab.

Built for everyone

Whether you’re blocking distractions for yourself or protecting your family, Site Blocker has you covered.

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Parents

Block inappropriate or distracting sites. The math challenge keeps kids from undoing your settings.

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Students

Stay focused during study sessions by blocking social media and entertainment.

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Professionals

Eliminate browsing distractions during work hours and boost productivity.

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Anyone

Build better digital habits by putting guardrails on your browsing.

Your data stays yours

100% local processing. Nothing leaves your browser.

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100% Local

All data stays in your browser. No servers, no cloud, no accounts.

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No Tracking

Zero analytics, zero cookies, zero data collection. We don’t know who you are.

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No External Scripts

Everything runs inside the extension. No CDNs, no remote code, no dependencies.

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Open Source

Every line of code is on GitHub. Audit it yourself — we have nothing to hide.

Get started in 30 seconds

Install the extension

Get it from the Edge Add-ons store.

Open the side panel

Click the Site Blocker icon in your toolbar. The blocker opens in the browser sidebar.

Add sites to block

Type a domain (e.g., reddit.com, x.com) and click + Add. It’s blocked instantly.

Stay productive

Use toggles to pause/resume blocking. Enable the math challenge to keep kids safe. Focus on what matters.

See it in action

Site Blocker side panel overview Math challenge child safety feature