BlockNSFW

Browser extension for blocking adult websites and reducing unsafe content across browsing, search, and social feeds.

Browser extensionfreeglobal

BlockNSFW is a free, open-source browser extension that blocks adult websites and reduces unsafe content exposure across browsing, search engines, and selected social platforms like Reddit and Instagram Reels, combining domain blocking, multilingual hostname filtering, and SafeSearch enforcement. Most filtering happens locally in the browser. It's aimed at individuals or families who want an open-source, auditable way to reduce adult content exposure across the whole browsing experience, not just dedicated adult sites.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of BlockNSFW - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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