Spark

The real-time signal-driven
advertising marketplace

Spark helps publishers make their ad inventory more attractive to the buy-side.
It packages inventory with real-time, revenue-driving signals at scale, the kind buyers rely on to evaluate media quality.
GENERATE MORE REVENUE
https://publisher-website.com/article
Time-in-view3.8s
Historical Viewability75%
Historical CTR0.22%
Ads to content ratio0.3
User engagement67%

The Power Behind Spark

Spark Engine transforms raw on-page data into high-value signals, deterministic, real-time, and impression-level. It surfaces dozens of metrics that prove the real quality of your inventory.

Exclusive supply chain access at scale
Pubstack’s unique position in the ad stack gives the Spark Engine visibility into sell-side signals. This allows us to uncover hidden value in a publisher’s inventory and surface it to buyers.

Real-time supply packaging
The Spark Engine package your inventory with buyer-relevant signals in real time. Ensuring faster, broader exposure and better performance in open auctions and curated deals.

Built with the buy-side in mind
Our Engine is co-designed with buyers; it continuously learns what the buy-side seek and adapts in real time, unlocking exclusive campaigns and higher revenue.

What are Signals?

In traditional programmatic, buyers see only basic information: domain, ad slot, device, user ID. But that’s just the surface.

Signals go deeper at scale.

Signals are real-time data points extracted directly from the page that reveal the true quality of an impression.

Predictive Viewability
Historical CTR
Scroll depth
Time in-view
Ads to content ratio
User engagement
Inactive user detection
Ad refresh rate
User session duration
Historical VTR
Ad position
Historical Win CPM
Ad speed
Connection speed
Screen size
Historical Viewability
Historical CTR
Scroll depth
Time in-view
Ads to content ratio
User engagement
Inactive user detection
Ad refresh rate
User session duration
Historical VTR
Ad position
Historical Win CPM
Ad speed
Connection speed
Screen size

How Spark Works

Extract
Meaningful Signals

Spark leverages AI and Machine Learning to extract business centric signals from the publisher page.

Package
Smarter Inventory

Spark repackages the publisher inventory for the buyers based on the most relevant signals.

Activate
Targeted Demand

Spark enables buyers target the publisher inventory according on their business objectives.

The Results Publishers See
with Spark

Unlock New Value with Spark

More Revenue

Unlock new budgets & higher CPMs.

Proven Uplift

AI-driven boost across your key KPIs.

True Differenciation

Stand out for quality, not just reach.

Boost your Direct Sales and Unlock Incremental Value

AVAILABLE NOW

Spark Demand

Spark Demand complements your direct sales. Through trusted partnerships with top demand partners, it connects your signals to premium demand, unlocking new brand budgets and campaigns.

COMING Q1 2026

Spark for Publishers

Take full control of your own signals with Spark for Publishers. Self-activate your data within your existing setup, package your inventory with premium signals, and deliver them directly to buyers.

Connect Spark to my Inventory

GENERATE MORE REVENUE

Our platform, built with publishers and for publishers, is already trusted by several premium media groups

REQUEST A DEMO
By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist us in our marketing efforts. See our Privacy Policy for more information.