Provide basic ads.txt generation

[jamesozzie]

Feature Description

With the AdSense platform pushing for users to create an ads.txt file, allow Site Kit to create a basic ads.txt file for users when none is detected. This could be created by default during setup, or there could be an option within the AdSense settings in Site Kit to place such a file if none exists.

A basic ads.txt file generated via Site Kit could include the following, where pub-0000000000000000 is the users own publisher ID: google.com, pub-0000000000000000, DIRECT, f08c47fec0942fa0

An example of how this may work could be below:

If no ads.txt file is present:

If an ads.txt file is present - the toggle is greyed out to limit the possibility of users overwriting:

To justify this addition, below you'll see some of the warnings from adsense.google.com that users face without having an ads.txt file present.

There was a previous GitHub issue for this request:

• https://github.com/google/site-kit-wp/issues/371

Ads.txt queries in the support forums is also something that appears frequently, with some examples below:

• https://wordpress.org/support/topic/ads-txt-file-with-site-kit/
• https://wordpress.org/support/topic/ads-are-not-showing-despite-successful-adsense-setup-and-site-kit-connection-2/
• https://wordpress.org/support/topic/adsense-102/
• https://wordpress.org/support/topic/site-kit-message-data-error-in-adsense-and-missing-add-txt-code/

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Acceptance criteria

Implementation Brief

Test Coverage

QA Brief

Changelog entry

[jamesozzie]

Another request in the support forums for this: https://wordpress.org/support/topic/when-will-we-have-auto-add-ads-txt-file/

[aberbotimue]

This makes so much sense, the plugin is supposed to do everything.. odd to miss out something that is required.

[RavanH]

i was so surprised to learn this feature is not already in there...