Elisabeth L. 
DeniedPixels doesn’t just censor content on the page — it can block entire websites from loading at all. The site blocking feature comes with a built-in list of known adult domains, and you can customize it with your own additions or exceptions.
How it works
Toggle site blocking on in the extension settings and you get instant access restriction to a curated list of known adult websites. Try to visit any domain on the list and instead of the page loading, you’ll see a full-screen red “DENIED” message. No partial load, no flash of content — just a hard block.
The blocklist is maintained as part of the extension and covers the most commonly visited adult domains. You don’t need to configure anything for it to work — just flip the toggle.
Whitelist and custom blacklist
The default blocklist won’t be perfect for everyone. Maybe there’s a domain on the list you actually want access to, or maybe there’s a domain that isn’t on the list but should be. That’s what the whitelist and custom blacklist are for.
Whitelist lets you add exceptions. If a domain is on the built-in blocklist but you want it accessible, add it to the whitelist and it’ll load normally. The whitelist overrides the default blocklist for those specific domains.
Custom blacklist lets you add your own domains on top of the built-in list. If there’s a site the default list doesn’t cover, add it here and it gets the same red “DENIED” screen as everything else on the blocklist.
Site blocking vs. content censoring
These are two separate features that work independently. Content censoring (detection zones + censoring styles) analyzes images and video on a page and applies effects to detected areas. Site blocking prevents the page from loading entirely.
You can use both at the same time. A blocked domain never loads at all. An unblocked domain loads normally but any detected content on the page gets censored according to your detection zone and censoring style settings. They complement each other — site blocking handles the domains you never want to see, content censoring handles everything else.
