The ads.txt file is a new well-known URL location published as https://example.com/ads.txt that is standardized by IAB. The purpose of this file is to disclose the advertising and tracking providers used by the website. The file is intended to increase the transparency of Internet advertising market and declared advertising providers that are authorized to post and resell traffic to the publisher's website.

We are pleased to announce that WebCookies.org now supports ads.txt both as a publisher (see https://webcookies.org/ads.txt) as well as web privacy scanner. Newly scanned websites will be checked for the presence of ads.txt file and the list of those currently known is published at /ads/txt/.