Header bidding
Prebid.js brings multiple demand partners into the auction. We handle integrations, configuration, and ongoing management alongside Google Ad Manager.
Prebid.js header bidding Publisher monetization since 2024
More revenue from
your website.
We build and manage your ad setup with Prebid.js, our own optimization software, and hands-on ad operations support.
Based in Amsterdam. Working with 227 publishers.
Tokcounter · Project resultsCASE STUDY
CPM after optimization
€3.71 ↗ 10%
Before€3.37
→After€3.71
Ad viewability67% → 82%
Fill rate improvement+5%
Revenue increased without adding more ads.
Technology & servicesPrebid.jsGoogle Ad ManagerProfitsfly AIAd Ops expertise
227Publishers
472MMonthly impressions
2024The year we started
What we do
Header bidding, software,
and people who can help.
From the first integration to day-to-day management, we look after the technical work behind your advertising.
Placement optimization
Our proprietary AI software learns from site performance to identify better ad placement opportunities. Our team turns those insights into practical improvements.
Proprietary optimizationTraffic quality
Our software helps detect issues and filter invalid traffic. Monthly reviews by our internal and external teams support ongoing quality monitoring.
Software + human expertiseBuilt around your website
Better placements start
with the numbers.
Every website is different. We use your performance data to find placement opportunities, test changes, and understand what works for your audience.
- Improve existing inventory before adding more ads
- Track revenue, fill rate, and viewability together
- Get direct support from technology and Ad Ops specialists
Our work
Results from two
publisher projects.
A look at what changed after we worked on the ad setup.
Tokcounter
We optimized the existing ad setup and placements to improve monetization without adding more ads.
+10%CPM
€3.37 → €3.71
€3.37 → €3.71
82%Viewability
Up from 67%
Up from 67%
+5%Fill rate
improvement
improvement
Biographies.net
We optimized the ad setup and applied our invalid traffic filtering system on Biographies.net.
+10%RPM
improvement
improvement
+3%Fill rate
improvement
improvement
−20%IVT deduction rate
4.7% → 3.76%
4.7% → 3.76%
Results are specific to these publisher projects and do not guarantee future performance. CPM is revenue per 1,000 ad impressions; RPM is revenue per 1,000 of the publisher’s measured units. The invalid traffic deduction change is a relative reduction.
Working with us
We start by understanding
your current setup.
A clear process, from the first review to ongoing improvements.
01 — REVIEW
Review the setup
We review your website, traffic, and existing ad implementation to understand the opportunity and technical requirements.
02 — CONNECT
Implement the changes
We configure Prebid.js, connect the agreed demand partners, and integrate the setup with Google Ad Manager.
03 — OPTIMIZE
Monitor and improve
Our software and specialists monitor results, investigate issues, and refine your monetization over time.
Questions we hear
A few things to know.
Do I need to add more ads?
Our focus is on improving the performance of your existing inventory. Tokcounter increased revenue without adding more ads. Any placement changes are considered in the context of your website and user experience.
How does Profitsfly work with Prebid.js?
Prebid.js is the open-source header bidding foundation. Profitsfly provides the implementation, demand partner integrations, proprietary optimization software, reporting, and ongoing technical management.
Can you provide MCM and Ad Exchange access?
We are working toward offering MCM services and connecting our platform with Ad Exchange for publishers. Availability is subject to Google approval, publisher eligibility, and the relevant account setup. We do not guarantee access or approval.
How do you monitor quality?
Our issue-detection software supports manual reviews by our internal and external quality monitoring teams. We review represented sites monthly and investigate alerts and reported issues as they arise.
About us
A small team in Amsterdam,
working on publisher revenue.
Profitsfly B.V. started in 2024 with a clear mission: help publishers increase advertising revenue and simplify ad management through software and Prebid.js header bidding.
We combine our own AI optimization and issue-detection software with hands-on support. Our six-person team works across technology, ad operations, and consultancy, supported by freelancers and industry specialists as we grow.
Today, we work with 227 publishers and 472 million monthly impressions. Our focus stays the same: understand each publisher’s setup, make practical improvements, and explain the results clearly.
Transparent terms
We agree on services, fees, and revenue shares before work begins, so publishers understand the arrangement.
Clear results
We explain what changed and how performance is measured. We distinguish CPM, RPM, fill rate, and viewability rather than treating them as the same result.
Accountable support
A named business, a physical address, and a team you can contact. Monthly quality reviews are supported by our software and external specialists.
Get in touch
Tell us about
your website.
Start with a conversation about your current setup.