[clear_dg]

uMatrix can block frames and js requests on a domain/sub-domain level. afaik, it can't block at url level, if that's what you meant.

That said, uMatrix, from what I remember, uses the webRequest api which does work from urls. So if you know JS, you can always create an extension and add your own filter.

[nerdponx]

To be clear, on the JS side I'm talking about providing whitelist-only access to things like the ambient light level, which is provided through a standardized browser API.