An IAB Tech Lab standard that lets app publishers declare which ad networks are authorized to sell their inventory.

Where do I put the app-ads.txt file?

At the root of the developer website listed in your App Store / Google Play page, e.g. https://studio.com/app-ads.txt.

What is a Certification Authority ID?

An optional TAG-ID of the ad system, the 4th field of an app-ads.txt record.

vidman-3b1c0.web.app app-ads.txt check

vidman-3b1c0.web.app is missing out on higher CPMs: its app-ads.txt has 1 invalid line. Buyers' crawlers skip invalid lines, so those sellers can't be verified.

Checked 20 Oct 2026. 1 lines, 0 unique records, 0 duplicates, 1 invalid lines, 0 ad networks detected.

Invalid lines

google.com, pub-7181155608511731, DIRECT, f08c47fec0942fa0 google.com, pub-5256231621580884, DIRECT, f08c47fec0942fa0 google.com, pub-4941746536171916, DIRECT, f08c47fec0942fa0 google.com, pub-1484287

Corrected file: vidman-3b1c0.web.app app-ads.txt (fixed).

FAQ

Does vidman-3b1c0.web.app have an app-ads.txt?

Yes — https://vidman-3b1c0.web.app/app-ads.txt has 1 lines (checked 20 Oct 2026).

Which ad networks does vidman-3b1c0.web.app work with?

No known ad network was detected in its app-ads.txt.

Is the app-ads.txt of vidman-3b1c0.web.app correct?