BlockNSFW – Porn & Adult Content Blocker

Blocks adult websites and inappropriate content using pattern matching and configurable filtering for safer browsing.

BlockNSFW is a powerful yet lightweight browser extension that keeps your browsing safe, focused, and family-friendly. It automatically blocks pornographic and adult websites before they load, so unwanted content never reaches your screen. Unlike simple site blockers that rely on a single list, BlockNSFW layers several detection methods that work together. It filters adult domains, understands hostnames in multiple languages, enforces SafeSearch, and uses on-device AI to scan images and read page text, catching explicit content even when the web address gives nothing away. All of it runs locally in your browser. And when the moment comes that you want to switch it off, it asks you to stop and think first. 🔑 Key Features Adult Website Blocking – Blocks known pornographic domains and adult platforms before the page loads, with regularly updated blocklists. Lock Your Settings – Protect your settings with a PIN so they cannot be changed on impulse. Anything that weakens your protection asks for it first; adding a blocked word or tightening a setting never does. Access Code (new) – An optional second lock. A random 32, 64, 128 or 256 character code appears and you retype it by hand, with copy and paste switched off and a typo giving you a fresh code. Nothing is hidden from you. The point is the minute of deliberate effort, which is often long enough for an urge to pass. Your Own Lists, Your Own Rules – Block any site or word you choose. Entries can be plain words, wildcards, or regular expressions, so one line covers many spellings: /p[o0]rn/ catches both, and title/Example Domain/ matches by page title. Import and export your lists as .csv or .txt. AI Image Protection – Scans images on your device and blocks explicit ones, even when nothing in the URL is suspicious. Your images are never uploaded. AI Text Protection (Beta) – A tiny multilingual model reads the page's text on your device to help catch adult sites across many languages, including Russian, Chinese and Arabic. It works together with AI Image Protection: a page is blocked when both agree. The model is being retrained, so for now it needs that second opinion rather than deciding alone. Multilingual Hostname Filtering – Detects adult hostnames across major non-Latin scripts and transliterated Latin, including internationalized (IDN/punycode) domains. SafeSearch Enforcement – Forces family-safe search results across major search engines, including Google and Bing. DNS Protection (optional) – Adds a network-level layer using Cloudflare for Families to stop adult domains before they resolve. Safer Social & Video – Blocks adult communities, hides short-form video reels, and filters age-restricted content. Stats, Streaks & Whitelist – Track what's been blocked, build streaks, manage your own allowlist, and review an activity audit, all stored locally. Guided Setup – A simple onboarding wizard gets you protected in seconds. Lightweight & Fast – Runs quietly in the background with minimal impact on browsing speed. 📱 Beyond This Browser BlockNSFW is also on Android, blocking adult sites across your whole phone rather than one browser. On Windows and Linux, an optional companion app can make the extension resistant to being uninstalled, with removal held behind a password a parent or accountability partner keeps. 👥 Who Is It For? Anyone working to break free from pornography, who wants a blocker that holds when willpower does not. Parents who want a safer browsing environment for their kids. Students and professionals who want to stay focused and avoid distractions. Anyone who prefers a cleaner, family-safe internet experience. 🔒 Privacy-Friendly The AI models are bundled with the extension and run entirely on your device. No accounts, no sign-ups, and your browsing is never tracked or sold. Your blocked words, lists and statistics stay on your machine. (Some optional features, like remote blocklist updates and DNS filtering, make network requests to provide protection; see the privacy policy for details.) 💛 Free, and Staying Free BlockNSFW is free, with no paid tier and no ads. It is supported by donations from people who find it useful. Helping someone overcome something should never sit behind a paywall. With BlockNSFW, you stay in control of what loads in your browser. Simple, effective, and built for privacy.