Business Details
2 Years
experience
Advertising Transparency Analytics Platform
Charles J Klees Golf Shop was founded to bring clarity and trust to programmatic advertising through comprehensive sellers.json analysis. Our mission centers on making seller relationships visible and understandable for all stakeholders in the ad tech ecosystem. We combine data-driven analysis of IAB sellers.json files with proprietary scoring algorithms to deliver meaningful transparency insights. Our platform serves publishers, advertisers, ad tech professionals, and researchers who require reliable data to navigate programmatic advertising. Since our launch in 2024, we have expanded to track 25+ platforms and 1M+ seller entries, offering weekly automated updates.Our four-component transparency scoring evaluates platforms on scale, completeness, freshness, and IAB compliance. We prioritize accuracy through rigorous validation against IAB specifications and maintain public documentation of our methodology. Our technology stack includes Next.js 15, PostgreSQL, and Vercel Edge Network for high-performance data delivery. We adhere to privacy-first principles by using only publicly accessible sellers.json data without collecting personal or proprietary information.
Services
Platform Rankings
Seller Directory
Domain Intelligence
Cross-Module Analysis
Transparency Scoring
Details
- Year established: 2024
Highlights and features
- We track 25+ advertising platforms and 1M+ sellers with weekly updates
- Our 4-component transparency scoring evaluates scale, completeness, and compliance
- We integrate SimilarWeb traffic data for comprehensive domain analysis
- Our public API provides free real-time access to transparency metrics
- We maintain 100% IAB Tech Lab specification compliance
Services
Platform Rankings
Track 25+ advertising platforms with weekly updated transparency scores. Analyze seller counts, compliance metrics, and market share data to optimize ad tech decisions. Provides actionable insights for publishers and advertisers seeking platform comparisons.
Seller Directory
Access 1.1M+ seller entries with relationship mapping and verification status. Monitor seller activity across platforms with weekly change tracking. Helps identify trusted partners and detect marketplace shifts in programmatic advertising ecosystems.
Domain Intelligence
Analyze 196K+ domains with 45B+ monthly visits using integrated SimilarWeb data. Track geographic reach and performance metrics to identify high-value publishing partners and emerging market trends in digital advertising.
Transparency Scoring
Evaluate platforms using four-dimensional scoring: seller count (30%), data completeness (25%), update frequency (20%), and IAB compliance (25%). Provides standardized benchmarks for comparing advertising platform accountability and operational integrity.
Cross-Module Intelligence
Discover connections between platforms, publishers, sellers, and domains. Identify multi-platform publishers and high-demand sellers through relationship analysis. Reveals market patterns and partnership opportunities across the programmatic advertising landscape.
Questions
Where does your data come from?
All data comes from publicly accessible sellers.json files published by advertising platforms following IAB Tech Lab standards.
How are transparency scores calculated?
Scores use a proprietary algorithm evaluating seller count (30%), data completeness (25%), update frequency (20%), and IAB compliance (25%).
How often is data updated?
Platform data updates weekly every Sunday at 6 AM UTC with change tracking available on individual platform pages.
Is your data free to use?
Yes, PublisherLens provides free access to all users as we believe transparency data should be universally available.
Can I request platform additions?
Yes, email [email protected] with the platform name and sellers.json URL to request new platform tracking.
