ZeroNSFW - Free NSFW Blocker

About

ZeroNSFW helps prevent accidental exposure to potentially NSFW images by analyzing images locally in your browser and blocking access based on your settings.

Unlike “after-the-fact” filters, ZeroNSFW is designed to be preventive: it can hide images first, quickly scan them on-device, then reveal only safe content.

KEY FEATURES
• On-device NSFW image detection: images are analyzed locally (no cloud scanning).
• Preventive reveal: potentially unsafe images stay hidden until a result is available.
• Three protection modes: Light / Normal / Strict (adjust sensitivity to your comfort level).
• Site Blocking (optional): block websites using your personal blocklist and an optional auto-block keyword list.
• Search Query Blocking (optional): on supported search pages, the extension can block certain queries locally when enabled.
• Allowlist support: keep important sites accessible even when blocking is enabled.

HOW IT WORKS
1) ZeroNSFW detects images on the page.
2) The image are processed locally in the browser to estimate an NSFW probability.
3) Based on your mode the image is shown or kept blocked.

PRIVACY BY DESIGN
• No accounts.
• No analytics.
• No tracking.
• No browsing history collection.
• No sending image contents, page contents, search queries, or classification results to the developer or any third party.
All processing happens locally on your device.