Free, Private Website Blocker for Chrome

Install Site Blocker from the Chrome Web Store, open the site you want to block, then click the Site Blocker icon in the toolbar and block it with one click. The site is blocked right away in every tab. To block only part of a site, such as YouTube Shorts, add an advanced rule by URL path, keyword or regex pattern in the settings page.

Yes. Site Blocker is a completely free block site extension for Chrome, with no premium tiers, no subscriptions, and no hidden costs. Every feature — including Focus Mode, advanced blocking rules, regex support, URL redirects, and usage statistics — is available to all users at no charge. We don't monetize your data either, because we don't collect any.

No. We collect nothing from the extension: there is no account, no analytics and no server of ours for it to send data to. Your settings and blocked sites are stored in your browser, and usage statistics are built on your device from your Chrome history. The one outside request is to Google's favicon service, which the extension uses to show website icons, so Google receives the names of those sites.

Yes. Site Blocker offers multiple blocking methods for precise control. You can block by hostname (e.g., reddit.com), specific URL path (e.g., /r/funny), keyword match (blocks any URL containing a word like "shorts"), or full regex patterns for advanced matching. You can also create allow rules that override blocks for specific subpages you still need access to.

Focus Mode is a distraction-free browsing feature that reverses the typical blocking approach. Instead of blocking specific websites, Focus Mode blocks all websites by default and only allows access to sites you explicitly whitelist. You set a timer — 15, 25, 45, 60, 90, or 120 minutes — and a live countdown appears in the extension popup. When the session ends, you receive a notification and normal browsing resumes. It's designed for deep work sessions where you need to eliminate all digital distractions.

Site Blocker installs from the Chrome Web Store, so it runs in Google Chrome and in Chromium-based desktop browsers such as Microsoft Edge and Brave. Opera needs its "Install Chrome Extensions" add-on first. Firefox is not supported yet.

Yes. You can unblock any site with one click from the extension popup or from the settings page. You're always in full control of your blocklist — there's no lock-out mechanism that prevents you from making changes. If you need temporary access to a blocked site, simply remove it and re-add it later.

Site Blocker uses a smart layered priority system to resolve conflicts when multiple rules apply to the same URL. From highest to lowest priority: Focus Mode (blocks everything not whitelisted), Redirect Rules (sends matching URLs to a different destination), Advanced Rules (hostname, URL, keyword, and regex rules — allow rules here can override blocks), and the Basic Blocklist (simple domain blocking). Higher layers always take precedence over lower ones.