Do Not Track

Universal Web Tracking Opt Out



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Overview


Do Not Track is a technology and policy proposal that enables users to opt out of tracking by websites they do not visit, including analytics services, advertising networks, and social platforms. At present few of these third parties offer a reliable tracking opt out, and tools for blocking them are neither user-friendly nor comprehensive. Much like the popular Do Not Call registry, Do Not Track provides users with a single, simple, persistent choice to opt out of third-party web tracking.

Do Not Track signals a user's opt-out preference with an HTTP header, a simple technology that is completely compatible with the existing web. Several large third parties have already committed to honor Do Not Track, but many more have been recalcitrant. We believe regulation is necessary to verify and enforce compliance with a user’s choice to opt out of tracking.

Did you know...


Behavioral advertising accounts for less than 5% of U.S. online advertising revenue. There are simple technologies for delivering advertising, analytics, and social features without tracking. Advertising industry self-regulation does not allow you to opt out of tracking, just seeing tracking-based ads. There is no industry self-regulation of analytics and social tracking. Studies have consistently shown that Americans overwhelmingly oppose web tracking.

For users


How to enable: Firefox, Internet Explorer, Safari

Developer resources


Cookbook: how to build third-party advertising, analytics, and social features without tracking
Draft Standard Specification
FourthParty Web Measurement Platform
Reference Browser Extensions
Web Application Templates
Web Server Configurations

Policy materials


FTC Comment: comprehensive policy statement
Annotated Bibliography of Related Work


The DoNotTrack.Us website is maintained by Stanford researchers Jonathan Mayer and Arvind Narayanan. We are affiliated with the Security Lab at the Computer Science Department and the Center for Internet and Society at the Law School.

The broader Do Not Track project is a collaboration of numerous researchers, advocacy groups, and technology companies. We have worked closely with Alex Fowler, Sid Stamm, and other Mozillans; Peter Eckersley, Lee Tien, Rainey Reitman, and other EFFers; Alissa Cooper; Chris Soghoian; Ashkan Soltani; Harlan Yu; and many more.

Creative Commons LicenseAll text on donottrack.us is licensed under a Creative Commons Attribution 3.0 Unported License.