What does this tool do?

The Ads.txt Validation Test is an essential tool for publishers and advertising platforms to ensure compliance with the Ads.txt file specification. This simple text file can be hosted on web servers to declare which advertising systems are authorized to sell a publisher's digital inventory, enhancing transparency and trust in digital advertising.

The Ads.txt Validation Test performs the following checks:

1. File Presence: It checks if the Ads.txt file exists on the publisher's web server at the standard location (example.com/ads.txt).

2. File Format: It validates that the Ads.txt file adheres to the correct format specified by the Interactive Advertising Bureau (IAB), ensuring correct syntax, line structure, and the use of valid identifiers for advertising systems (accounts, certification authorities, etc.).

3. Authorized Digital Sellers: It verifies whether the advertising systems listed in the Ads.txt file are authorized to sell the publisher's inventory by cross-referencing them against known lists of certified advertising platforms and resellers.

How to use it?

1. Enter the URL of the webpage you want to check.

2. Click on "Check ads.txt".

3. Review the results to see if the ads.txt file exists and its validation status.

Is it free to use?

Yes, the Ads.txt Validation Test tool is completely free to use.