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Shedding Light on the AdTech Supply Chain

Find out who is selling your inventory
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Or Validate Ads.txt

Our mission is to help publishers and buyers gain insight into the authenticity of the parties who mediate between them. We promote transparency to curb the fraud that is casting a shadow over the AdTech ecosystem.

How it works

At the heart of our initiative lies an automated tool that compares ads.txt files with sellers.json and provides simple and useful feedback. We based the tool on our extensive knowledge and experience with the AdTech industry and our passion for transparency.

Gain back control over your ads.txt file

Code sample for ads.txt

Gain back control over your ads.txt file

  • Easily see who is really selling your inventory
  • Validate ads.txt lines provided by new sellers Validate Ads.txt
  • See how you are doing compared to your competitors and the industry
  • Learn all you need to know about ads.txt and sellers.json in one place

Industry Highlights

Insights about state of transparency from 116 thousand websites we crawl

Average number of ads.txt lines per domain
Average number of sellers per domain
Average number of non-existing seats per domain
Average number of exchanges per domain
Average number of Intermediaries per domain

Golden Rules of Domain Safety

Our Partners Are Saying

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Michael McNallyChief Scientist at HUMAN
Sellers.guide is an awesome tool that walks visitors through IAB’s Transparent Supply Chain, explaining the most common errors and misunderstandings. It can guide participants toward the most profitable and safest use of this vital part of ad tech.
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Paul BannisterChief Strategy Officer at CafeMedia
The automation capabilities of Sellers.guide have been a great benefit to our team. It saved significant manual work while helping us solve problems across our business.
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Nick FrizzellVP, Inventory Quality and Planning at SpotX
Sellers.guide is a great resource for media owners to maximize their bottom line by pointing out errors and listings that revenue cannot be attributed to.
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Steve BoymelVP Business Development at Farlex
Cleaning up our ads.txt was amazingly simple. If you are not using Sellers.guide - you are missing out on an opportunity to protect your brand.
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Ayman ChaarHead of Programmatic at ResearchGate
Sellers.guide is a brilliant idea. It saves so much manual work by automating the process and makes it easier to look at the big picture of the supply chain.
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Ezra MenagedCEO at Hometalk Inc.
Sellers.guide is an elegant, transparent, and automated solution that sheds light on how ads.txt ought to be handled. Creating simple action items for publishers.

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