That’s actually not possible on iOS. The content blocking framework only allows a third party ad blocker to submit a JSON file to the system and the rules are processed by Safari.

If you are referring to the quote below, that applies to the Mac version. The iOS version uses a share sheet extension that uses an out of process extension where you have to explicitly share the link you want to block.

Safari warns me that 1Blocker Menu has access to webpage content, why? We use this permission in order to get information about current tab's domain when you select whitelist option. Sadly, there's no technical way to request just this functionality from the system, so we have to request full access to webpage content (which may include your sensitive information). However, we understand how important this data is and only use the domain. We do not transmit or process your data in any other way. Feel free to disable 1Blocker Menu if you don't like this (you'll still be able to block content).

Actually the quote from 1Blocker:

> Sadly, there's no technical way to request just this functionality from the system, so we have to request full access to webpage content (which may include your sensitive information)

is incorrect. They could use a share extension on the Mac as well (which we do for our adblocker app) which would give them access to the URL when the share extension is accessed but not give full access to the web page content.