Adoption Statistics

Tracking hundreds of thousands of publishers and advertising networks across the web. Updated Daily.

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Free Aggregate

IAB charges $10,000 for the same data. We offer the full dataset free. Compiled from original sources.

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Market Research

Generate leads and perform competitive analysis. Search by publisher, ad network or pubID.

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Simple Verification

Publishers make mistakes. Get error alerts or request verification on-demand. Integrates into your UI.

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API Access

Determine ad authorization instantly with simple RESTful API. Built on AWS for speed and reliability.

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What is Ads.txt?

Ads.txt is a new standard for websites to communicate which ad networks are authorized to sell inventory on a site. The ads.txt initiative is led by the IAB and is designed to fight ad fraud.

Transparency in the ad supply chain allows advertisers to know if the ads they buy are legitimate. Ads.txt does not stop all ad fraud, but as publisher adoption increases it becomes harder for fraudsters.

How ads.txt works is simple. Participating publishers place a text file called "/ads.txt" on the root of their domain. Then publishers, exchanges, and third-parties can quickly check to verify authorized sellers.

Learn more