December 1, 2023


Your Partner in the Digital Era

New Firefox privacy feature strips URLs of tracking parameters

Mozilla Firefox

Mozilla Firefox 102 was introduced now with a new privacy function that strips parameters from URLs that are made use of to monitor you around the world wide web.

Several firms, which include Fb, Marketo, Olytics, and HubSpot, use custom made URL query parameters to keep track of clicks on backlinks.

For case in point, Fb appends a fbclid question parameter to outbound one-way links to keep track of clicks, with an example of a person of these URLs shown underneath.

With the release of Firefox 102, Mozilla has added the new ‘Query Parameter Stripping’ characteristic that mechanically strips a variety of query parameters used for monitoring from URLs when you open up them, irrespective of whether that be by clicking on a connection or basically pasting the URL into the tackle bar.

Once enabled, Mozilla Firefox will now strip the next tracking parameters from URLs when you click on backlinks or paste an URL into the deal with bar:

  • Olytics: oly_enc_id=, oly_anon_id=
  • Drip: __s=
  • Vero: vero_id=
  • HubSpot: _hsenc=
  • Marketo: mkt_tok=
  • Facebook: fbclid=, mc_eid=

To illustrate how this performs, BleepingComputer established a take a look at site containing backlinks to with the higher than tracking parameters.

As you can see down below, when I simply click on the hyperlink for https://case in, it opens https://case in but with the tracking parameter taken out.

Demonstration of the Firefox Query Stripping feature
Demonstration of the Firefox Query Stripping function
Resource: BleepingComputer

Whilst this is a terrific begin, there are supplemental trackers that are not currently being filtered, which privateness-concentrated Brave Browser now blocks.

How to empower the new privateness function

The new Question Parameter Stripping characteristic is aspect of Firefox’s Enhanced Tracking Safety.

To enable Query Parameter Stripping, go into the Firefox Settings, simply click on Privacy & Protection, and then adjust ‘Enhanced Tracking Protection’ to ‘Strict.’ 

Mozilla Firefox's Enhanced Tracking Protection set to Strict
Mozilla Firefox’s Enhanced Monitoring Safety established to Rigorous
Source: BleepingComputer

Nonetheless, these tracking parameters will not be stripped in Private Manner even with Stringent mode enabled.

To also allow the feature in Personal Method, enter about:config in the tackle bar, research for strip, and set the ‘privacy.query_stripping.enabled.pbmode‘ option to legitimate, as proven down below.

Enable privacy.query_stripping.enabled.pbmode setting
Enable privacy.query_stripping.enabled.pbmode location
Source: BleepingComputer

It need to be famous that placing Increased Tracking Security to Strict could trigger concerns when making use of certain web pages. 

If you empower this attribute and uncover that internet sites are not functioning correctly, just set it back again to Normal (disables this characteristic) or the Personalized placing, which will need some tweaking.