Trust anchor pages

What it checks

The extension looks for three pages: about, contact and privacy. For each one it first uses a link the page actually publishes (any link on the same site whose URL or text mentions “about”, “contact” or “privacy”), then tries common paths. Links to other domains are never followed:

Page	Paths tried
About	/about, /about-us, /company
Contact	/contact, /contact-us
Privacy	/privacy, /privacy-policy

A page only counts if it returns a successful response with at least 500 characters of text. Shorter pages are reported as too thin to count.

Some sites answer every path with a 200, even ones that do not exist. The extension detects this by requesting a path that cannot exist (the same one the Agent-friendly 404s check uses). On those sites, a candidate page only counts if its wording is clearly different from that catch-all response, so the homepage served at /about is not mistaken for an about page.

Results

Status	When
Pass	All three pages exist with at least 500 characters of text
Warn	At least one exists with real content, but another is missing or too thin
Fail	None of the three was found with real content

How to fix

Publish real about, contact and privacy pages, each with at least 500 characters of content, and link to them from every page, typically in the footer:

<footer>
  <a href="/about">About us</a>
  <a href="/contact">Contact</a>
  <a href="/privacy">Privacy policy</a>
</footer>

Linking them means the extension, and an agent, can find them whatever URL you use. If your site returns 200 for missing pages, fix that too: it makes these pages harder to tell apart from the catch-all.

Support by agent and browser

Announced means the vendor’s own docs or announcement say so. Published is the date on the vendor’s own page, where it has one. Checked is the last time our weekly research found that page still saying so.

No agent or browser has announced anything about this yet.

No evidence yet27

• ChatGPT
• Claude
• Gemini
• Perplexity
• Copilot
• Meta AI
• ChatGPT Atlas
• Comet
• Dia
• Gemini in Chrome
• Edge Copilot Mode
• Claude Code
• Cursor
• Codex
• GitHub Copilot
• Windsurf
• CCBot
• Applebot
• Amazonbot
• Bytespider
• Cohere
• Mistral
• DuckAssist
• Chrome
• Edge
• Firefox
• Safari

Names and marks belong to their owners and are used only to identify products. None of these vendors is affiliated with Sitebulb. Spotted something out of date? Send a correction.

Adoption on the top 100 sites

54%

53 of 99 measured sites implement it

Scanned 23 Oct 2026 with the Sitebulb Labs extension, against the Tranco list (tranco-56Z8N). 1 sites couldn’t be measured (bot challenge or timeout) and are left out of the share.

Sites implementing it53

1. #2 cloudflare.com
2. #3 aws.amazon.com (via amazonaws.com)
3. #9 microsoft.com (with warnings)
4. #12 apple.com
5. #16 x.com (via twitter.com) (with warnings)
6. #18 linkedin.com (with warnings)
7. #20 dzen.ru (with warnings)
8. #24 azure.microsoft.com (via azure.com) (with warnings)
9. #29 amazon.com (with warnings)
10. #32 github.com
11. #37 fastly.com (via fastly.net) (with warnings)
12. #39 whatsapp.com (via whatsapp.net)
13. #42 bing.com (with warnings)
14. #43 netflix.com (with warnings)
15. #44 triplinkintl.com (with warnings)
16. #48 gandi.net (with warnings)
17. #50 marketingplatform.google.com (via doubleclick.net) (with warnings)
18. #52 uk.pinterest.com (via pinterest.com) (with warnings)
19. #55 wordpress.org
20. #56 teams.live.com (via skype.com) (with warnings)
21. #57 cloudflare.net (with warnings)
22. #60 digicert.com (with warnings)
23. #61 adobe.com
24. #68 zoom.com (via zoom.us)
25. #71 endpoints.news (with warnings)
26. #84 nginx.org (with warnings)
27. #85 ntp.org (with warnings)
28. #90 vimeo.com
29. #91 primevideo.com (via amazonvideo.com) (with warnings)
30. #93 bunny.net (via b-cdn.net)
31. #94 blogger.com (via blogspot.com) (with warnings)
32. #95 mozilla.org
33. #96 f5.com
34. #98 telegram.org (via t.me) (with warnings)
35. #101 wordpress.com (with warnings)
36. #106 sentry.io
37. #107 letsencrypt.org (via lencr.org)
38. #109 ui.com (with warnings)
39. #110 european-union.europa.eu (via europa.eu) (with warnings)
40. #116 bitly.com (via bit.ly)
41. #120 samsung.com
42. #122 intuit.com
43. #127 openai.com
44. #132 dropbox.com
45. #135 discord.com (via discord.gg) (with warnings)
46. #139 apache.org (with warnings)
47. #140 android.com (with warnings)
48. #141 nih.gov (with warnings)
49. #144 vk.ru (with warnings)
50. #153 webex.com
51. #156 godaddy.com (with warnings)
52. #159 firebase.google.com (via crashlytics.com) (with warnings)
53. #161 nytimes.com (with warnings)

Overview

3/9

Speculative

Specified, but little evidence anything uses it yet.

How this rating is worked out3 of 9 points

Factor	Points	Why
Vendor support	0 / 3	0 vendors supporting, 0 partly or planned
Top-100 adoption	3 / 3	54% of measured sites
Spec maturity	0 / 3	Community proposal

8 or more points is Established, 5 to 7 is Gaining traction, 2 to 4 is Speculative and under 2 is Stalled. A feature is also Stalled when more vendors have said no than yes. Read the spec.

Community insights

No community insights for this feature yet.

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