ads.txt Specification Version 1.0

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Specification Version Released March 2021Please email or with feedback or questions. This document is available online at IAB Technology Laboratory 20 21 IAB Technology Laboratory TABLE OF CONTENTS ABOUT ........................................ ........................................ ..................................... 3 ABOUT IAB TECH LAB ........................................ ........................................ ............................. 3 1. ABSTRACT ........................................ ........................................ ........................................ ... 5 2. INTRODUCTION ........................................ ........................................ .................................. 5 CHANGE LOG ........................................ ........................................ ........................................ ....... 5 3. Specification .

use "Content-Type: text/plain; charset=utf-8" to signal UTF8 support. It is also advisable to prefer HTTPS connections over HTTP when crawling ads.txt files. In any case where data is available at an HTTPS and an HTTP connection for the same URL, the data from HTTPS should be preferred.

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