Quantcast Legal Center Legal Center Error Contracts Quantcast Measure and Publisher Terms of Service US Data Privacy Addendum Key Terms Privacy Implementation for Quantcast Publisher Partners Privacy Implementation for Quantcast Advertiser Partners Laws Campaign Policy Quantcast Website and Corporate Privacy Policy Quantcast Products and Services Privacy Policy Quantcast Buyer Terms International Data Privacy Addendum Additional Terms CCPA Transparency Report Applicant Privacy Notice Quantcast Privacy FAQs Quantcast Product and Services Partners Quantcast Measure and Publisher Terms of Service Version Version 3.2 (Current) Version 3.1 Version 3.0 Version 2.0 Version 1.1 Version 1.0 Effective January 12th 2026 Download Table of Contents If you have an active, duly executed contract for Quantcast services (“Existing Contract”), the Existing Contract will govern your use of the service(s) covered in the Existing Contract instead of these Quantcast Measure Terms of Service (“Terms”). In addition, these Terms only apply to the Quantcast Measure service (i.e., the “Service” as described below) and not to any other Quantcast product or service. Quantcast Measure Terms of Service This Quantcast Measure Terms of Service (this “Agreement”) describes the terms and conditions on which Quantcast makes Quantcast Measure (the “Services”) available to you. BY CLICKING THE “I ACCEPT” BUTTON, COMPLETING THE REGISTRATION PROCESS, USING THE SERVICES OR ENTERING INTO AN OFFLINE AGREEMENT THAT REFERENCES THIS AGREEMENT OR INCLUDES A LINK TO THIS AGREEMENT, YOU ARE AGREEING TO BE BOUND BY THIS AGREEMENT. IF YOU ARE ENTERING INTO THIS AGREEMENT ON BEHALF OF A COMPANY OR OTHER LEGAL ENTITY, YOU REPRESENT THAT YOU HAVE THE AUTHORITY TO BIND SUCH ENTITY, IN WHICH CASE THE TERMS “YOU” OR “YOUR” WILL REFER TO SUCH ENTITY (OR, IF SUCH ENTITY IS ACTING AS AN AUTHORIZED AFFILIATE, THEN THE TERMS “YOU” OR “YOUR” WILL REFER TO SUCH ENTITY, THE AUTHORIZING PARTY(IES), OR BOTH, AS APPLICABLE). QUANTCAST MAY MODIFY THIS AGREEMENT FROM TIME TO TIME; CONTINUED USE 30 DAYS AFTER NOTIFICATION WILL CONSTITUTE ACCEPTANCE (SEE SECTION 10). Capitalized terms not otherwise defined herein are defined in Section 14. This Agreement incorporates the Privacy Implementation for Quantcast Publisher Partners. 1. Introduction: Reachpoints, Tags, and Measurement Data. Quantcast Measure is a free digital audience measurement service that allows you to tag web pages, video, advertisements, apps, content, and paid search campaigns (what we call, “Reachpoints”) for direct measurement. You can also define and measure actions and events by customizing your Tags with labels. You have complete control over (and are solely responsible for) which Reachpoints are tagged, how segments are labelled (e.g., with meaningful or obfuscated names), and how the resulting Measurement Results are or are not disclosed publicly. Each time a browser visits your tagged Reachpoints, Quantcast may, in accordance with Applicable Privacy Laws, collect traffic statistics like those in any web server log (what we call, “Measurement Data”). We then apply proprietary Quantcast algorithms and other data to the Measurement Data to generate the “Measurement Results”, which we make available to you on the Quantcast website (see Section 3). To measure Reachpoints that you do not own or control, you may provide your Tag to a third party who accepts this Agreement (any such third party, an “Authorized Affiliate”); you may also instruct us to give the Authorized Affiliate access to the Measurement Results. 2. Registration. In order to access the Services you must register for a Quantcast account on the Quantcast website. Each new app you Tag requires its own registration and then receives its own unique API key. In registering, you agree to provide accurate, current, and complete information, and to keep it up to date. Any processing of Personal Information when registering for a Quantcast account will be processed in accordance with the Quantcast Website and Corporate Privacy Policy which you can access here. You are responsible for keeping your password confidential. You hereby take responsibility for all actions taken—and instructions provided to Quantcast—under your account or with the Measurement Results, by you or any third parties, whether or not authorized. You will notify Quantcast immediately of any unauthorized or non-compliant use of your account and will cooperate with us in stopping it. 3. Measurement Data and Results. Quantcast uses each piece of Measurement Data both to understand your audience (for your benefit only) and as one of trillions of data points for predictive analytics and in determining what content and advertising to show individuals across the internet and other digital applications. You acknowledge that Quantcast may use Personal Information it receives from you to provide services to other Quantcast clients or for Quantcast’s commercial interests that may be unrelated to providing the Services to you. Quantcast will never sell your audience (whether identified as such or not) and you control the extent to which Quantcast displays the Measurement Results. Quantcast grants you perpetual rights to use, copy, and distribute the Measurement Results, including with our sharable widgets, only as long as you: Credit Us. Conspicuously include: “Source: Quantcast www.quantcast.com”; Present the Measurement Results Exactly as We Provided It. Do not: (i) manipulate or modify the Measurement Results to state or suggest different results from those specifically presented by Quantcast; (ii) combine information related to different Quantcast profiles (for example, by adding together the reach from two different sites instead of presenting the cross-site unduplicated reach measurement provided by Quantcast); (iii) quantitatively aggregate or combine information in the Measurement Results with information derived from other sources (but offering a comparison with information derived from other sources is permissible); Don’t Use Our Work to Compete with Us. Do not use the information in the Measurement Results in any way that competes with Quantcast; and Bind Third Parties. If you provide the information in the Measurement Results directly to any third party (rather than by having them access the information through the Quantcast website), you must ensure that they agree to be bound by and comply with the terms of this Agreement including the foregoing requirements. 4. Tagging Rules and Privacy. You agree not to misrepresent your digital traffic, audience, or user activity in connection with Quantcast, the Services, or any Tags. You agree not to tag any adware or spyware inventory, or any Reachpoint revealing precise geographic location (i.e., information that describes the precise location of a device derived through any technology that is capable of determining with reasonable specificity the actual physical location of an individual or device), specific health / medical /sex-life information, credit card or financial data, or criminal convictions or charges. In addition, you agree not to tag any Reachpoint revealing data regarded as “sensitive” or “special category” Personal Information under Applicable Privacy Laws, including data revealing racial or ethnic origin, political opinions or parties, religious or philosophical beliefs, trade union membership, or health. You further agree not to tag any website that contains information about health conditions or treatments or that might otherwise reveal or suggest an individual’s health status or treatment. If you represent to Quantcast (e.g., during the signup process) that your Reachpoints are directed to users under the age of 16, Quantcast will not collect any Personal Information from such Reachpoints and you will not receive those of our services that require collection of data across different websites. You will not modify the Tag other than as described in a Quantcast Learning Center Guide. You agree to update your Tag (which may require retagging your Reachpoints) when we notify you of any Tag fixes, updates or upgrades. You will use the Tag in the top most frame possible. You will retain the Tag’s origin address that we provided, in full. You agree to comply with Applicable Privacy Laws and also industry self-regulation Principles and Codes of Conduct for interest-based advertising in connection with your use of the Tag and the Services. You agree not to use the Services to track or collect personally identifiable information (i.e., information that can be used to contact or identify a particular individual, including name, address, telephone number, email address, financial account number or government-issued identifier) of end users. To the extent that the web pages or apps in which you place the Technology are accessed by end users located in Europe, you agree to implement a transparency and consent solution compatible with the IAB Europe Transparency and Consent Framework or another solution mutually agreed by both parties in writing. While you are implementing such consent solution, you agree to (i) obtain consent for Quantcast to use cookies and similar technologies in compliance with Applicable Privacy Laws, (ii) provide proof of such consent if requested by Quantcast, and (iii) not permit calls from your web pages or apps to Quantcast servers if such consent has not be obtained. You agree to name Quantcast as a party for or by whom cookies or similar technologies are used to access the device and Personal Information is collected through your webpages or apps. You further agree to prominently display to end users a user friendly, easily accessible, clear and comprehensive privacy policy (and, if necessitated by Applicable Privacy Laws, a separate cookie policy) that, where required, complies with Applicable Privacy Laws and contains the following (a) a statement that your site or app permits data collection for interest-based advertising, (ii) a description of the types of data collected for such advertising, (iii) an explanation of the purposes for which data is collected by, or transferred to, third parties, and (iv) a conspicuous link to either an opt-out mechanism, such as the NAI or DAA opt-outs for companies established outside of Europe or a consent revocation page for companies established in Europe. If you use the Services to collect data from a network of domains or subdomains, you will inform each in advance of such disclosures. In the case of app measurement, operating system platforms provide device-level setting options that allow end users to indicate their preference with respect to third party data collection and targeted advertising (the “Ad Preference Setting”). Quantcast treats these device level Ad Preference Settings as consumer opt-outs and you will accurately pass the Ad Preference Setting to Quantcast. You will not send any identifier associated with a device to the extent that such device has otherwise indicated that the end user wishes to be opted out of advertisement tracking. Unless agreed otherwise, you and Quantcast are each separate and independent Businesses or Controllers of any Personal Information which you and we may disclose or receive under this Agreement. You and Quantcast, pursuant to this Agreement, do not and will not jointly determine the purposes or the means of Processing of any Personal Information disclosed or received under this Agreement. Each party shall comply with the obligations that apply to it under Applicable Privacy Laws and provide Personal Information Processed pursuant to this Agreement the level of privacy protection required by such laws. In the event that either party determi…