Context Matters
Drive your brand objectives with a contextually relevant ad experience

Zefr creates targeted video ad placements. With our custom packages, we dive into YouTube one video at a time ensuring brands can safely and effectively scale their video ad campaigns.

Zefr's President Toby Byrne announced as exec to watch for in 2018 via Variety

Why We’re Different

We enable brands to safely and effectively harness the power of video with the right context and content. Every time.

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Reach Your Audience on the Platforms that Matter

Zefr’s technology reaches your audience by aligning the right ad with the right content, on the platforms they care about.


Bring Contextual Advertising to YouTube

Context means your brand’s message resonates with your audience on YouTube.  If it’s not relevant, it’s just noise.

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IPG Study: Why Context Matters on YouTube

An IPG Media Lab study measuring the brand impact of contextual alignment in social video showed a large increase in recommendation and purchase intent through Zefr technology.

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Be More than Brand Safe…
Be Brand Suitable

Our intelligent inventory is a compass that navigates away from dangerous videos and towards brand success. Relevance is key to our targeting.

Learn more about Zefr’s Impact

Read some of our success stories.

How Contextual Targeting Drives Brand Success

A CPG company turned to Zefr to distribute a branded content series to millennials driving a lift in aided awareness and brand favorability.  

Reach consumers in the back to school mindset

By contextually targeting moms during the back to school time frame, Zefr increased this brands View Through Rate by 140% compared to YouTube.

Delivering a QSR TV-like reach in social video

With customized video level targeting, Zefr drove lift in multiple KPIs for this Quick Service Restaurant.

Ready to Talk About Contextual Video Advertising? So Are We.