Firefox now offers a feature to strip some web trackers of Meta, HubSpot, and Marketo from URLs, following similar functionality in Brave
Release Notes tell you what's new in Firefox. As always, we welcome your feedback. Pieter Arntz / Malwarebytes Labs : Update now! Mozilla fixes security vulnerabilities and introduces a new privacy feature for Firefox Cory Underwood / Development & Analytics : Firefox adds support to strip tracking parameters from the URL Sumit Adhikari / Android Headlines : Firefox Adds Another Nifty Privacy Trick To Block Trackers Alaina Yee / PCWorld : This new privacy feature in Firefox strips tracking info from links Kyle Barr / Gizmodo : A New Firefox Update Can Stop Certain URLs from Tracking You Around the Web Bogdan Popa / Softpedia News : Mozilla Firefox 102 Now Available for Download Allison McDaniel / 9to5Mac : Firefox now lets users remove tracking parameters from URLs to enhance privacy Cesar Cadenas / TechRadar : Firefox now blocks trackers with one simple trick Monica J. White / Digital Trends : Websites are constantly tracking you — but Firefox has a fix Tweets: Paul Bannister / @pbannist : Good writeup of the latest Firefox privacy changes. Unshockingly, they block a lot of URL trackers but don't block the Google Search URL tracker - since Mozilla is totally reliant on revenue from Google Search https://twitter.com/... Simon Poulton / @spoulton : Interesting new feature designed to strip critical platform tracking params (ie. fbclid) released on Firefox today. It's off by default, but will likely grow and further decrease signal resilience (and thus, increase reliance on PII collection methods). https://www.bleepingcomputer.com/ ... Rakesh Agrawal / @rakeshlobster : Chrome will no doubt add this soon. https://twitter.com/... Gabe Rivera / @gaberivera : Hope it does this for tweets, because about a dozen times per days I see a terrible tweet and then paste it into a friend chat, and somehow it's less funny if the tweet URL is junked up with params... https://twitter.com/... @firefoxsupport : Firefox 102 is out today. Make sure you update your Firefox to get these updates 👇 ⬇️ You can now disable the download panel automatically opens 🖥 Subtitles and captions for PiP are now available for more streaming platforms Learn more: https://www.mozilla.org/...
Context & Ripple Effects
Firefox has progressively moved tracking protections from private browsing to default defenses: tracking protection in private browsing was followed by default blocking of third-party cookies, fingerprinting, and cryptomining in Firefox 69. Social-tracker blocking in Firefox 70 extended that baseline with a privacy report.
URL-parameter stripping addresses a residual tracking path in links themselves, putting Firefox alongside Brave on this specific protection rather than introducing a wholly new privacy direction.
First-order effects
- Firefox users can remove certain tracking parameters associated with Meta, HubSpot, and Marketo from URLs, reducing those firms' ability to connect link clicks through those identifiers.
- Mozilla adds link-level protection to a browser privacy stack that had already focused on cookies, fingerprinting, cryptomining, and social trackers.
Second-order effects
- Meta, HubSpot, and Marketo lose some browser-visible referral data from Firefox traffic when their supported URL parameters are stripped, increasing the importance of tracking methods Firefox does not remove.
- Brave's earlier implementation means Firefox is matching an existing privacy control, making URL cleanup a more recognizable point of browser competition rather than a Brave-only feature.
Third-order effects
- Browser privacy controls are broadening from blocking third-party code and storage to altering identifiers carried in URLs, shifting more tracking-policy enforcement into the browsing layer.
- If browser vendors continue to add parameter-level defenses, marketing and advertising platforms will face less consistent cross-site attribution data across browsers with different privacy defaults.
The trend: Browser privacy competition is expanding from blocking trackers on pages to limiting the identifiers embedded in links users share and open.