Fabulous. Works exactly as advertised.

Works

Installed on féb. 2019, works as expected (at least it seems to, see Jyotsna Gupta comment) on FF 65.0. Could be enhanced by adding more tracker signatures (e.g. "fbclid")

It's a useful addon, that works for normal links, but what's missing is support for XHR links.

The idea is great but it is not implemented properly. It doesn't fulfill the purpose. It removes UTM tokens from the URL after the page is loaded, so it doesn’t prevent the tracking.

Many unsolved bugs at the moment, is the developer still here ?

I previously tested this addon on FF 53, and it failed to prevent the initial page load, meaning that the request still went to the target server with the url parameters attached.

However, on FF 57+, the initial page load is prevented, the URL is rewritten sans utm_*, and everything is great.