.txt

ads.txt

Allows sites to specify which ad system accounts are authorised to sell their ad inventory.

• https://well-known.dev/resources/ads_txt/

humans.txt

A means to list information about people who have contributed to building a website.

• https://humanstxt.org/

robots.txt

An informal standard that allows sites to ask web crawlers to not crawl certain urls.

• https://well-known.dev/resources/robots_txt/

security.txt

Allows sites to communicate their security policies, e.g. how to report a vulnerability.

• https://well-known.dev/resources/security_txt/

trust.text

Allows publishers to declare connections to other publishers and associations.

• https://well-known.dev/resources/trust_txt/
• https://journallist.net/reference-document-for-trust-txt-specifications