Context Evolved.
Contextual Data.
Built for Brands.

Zefr’s Contextual Data Platform captures, organizes, and activates brand suitability and contextual data on the world’s largest platforms.

Zefr is Selected as Brand Safety Reporting Partner by Youtube

Announcing the Development of an Independent Brand Safety and Suitability Measurement Product, based on 4A’s and GARM Industry Standards

Zefr is now an official Facebook Marketing Partner

Solving Brand Suitability: A New Study from Magna and Zefr

Download the whole report to learn how Human-in-the-Loop Contextual Targeting Can Solve Brand Suitability

The Evolution of Context

No PII, no problem. Zefr’s technology enables independent contextual data, based on each brand’s suitability standards. The result is effective and transparent targeting, without being creepy.


Not every type of content is suitable for every brand. Zefr’s precise targeting technology enables brands to activate scaled contextual campaigns, based on their distinct suitability and risk tolerances. Ensuring each ad is aligned with the right content, every time.


Pre-flight control with content-level transparency. Our Context DMP enables brands to manage and modify their suitability definitions based on content, rather than relying on legacy tools like keyword-blocking.


Unlike static solutions, Zefr’s dynamic targeting drives more efficient workflows and more effective campaigns. Effective contextual data delivers brand suitability without compromising reach. Ensuring your campaign objectives are met. Always.

Learn more about Zefr’s Impact

Read some of our success stories.

Leveraging Zefr's Contextual Data to Find Success "At Home"

Find out how a financial services brand pivoted their strategy to reach consumers with messaging relevant to recent societal behaviors.

Launching a New Vehicle to the Hispanic Market

Find out how Zefr helped an auto brand increase reach among its multicultural target while facilitating a deeper engagement with multicultural families.

Fitness in Context: How At-Home Fitness is Changing Consumer Habits

Find out how Zefr leveraged our proprietary process (in which people watch videos to train machine learning models for content) to explore recent viewership trends in At Home fitness and exercise.

Ready to Talk About YouTube Content Targeting? So Are We.