Redirect hygiene

What it checks

The extension fetches the page’s HTML and looks for two kinds of client-side redirect:

• a <meta http-equiv="refresh"> tag, and
• a stub page: one that assigns location (for example window.location.href = or location.replace() and has fewer than 200 characters of visible text.

Both conditions are needed for a stub. Plenty of working pages assign location somewhere in their scripts; only a page with almost no content is treated as a redirect in disguise. An agent that does not run scripts stops at that page.

Results

Status	When
Pass	No meta refresh and no stub redirect, including pages reached through an HTTP redirect
Fail	The page contains a meta refresh tag
Fail	The page has under 200 characters of visible text and redirects in JavaScript
N/A	The page’s HTML could not be fetched, so there was nothing to inspect

How to fix

Replace client-side redirects with an HTTP 301 (permanent) or 302 (temporary) from the server. For example, in a Cloudflare Pages or Netlify _redirects file:

/old-page  /new-page  301

Or in nginx:

location = /old-page {
    return 301 /new-page;
}

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.

Agent	Status	Source
Coding agents
Claude Code Anthropic	Supported (announced)	Claude Code tools reference: WebFetch Undated · Checked 9 Oct 2026Follows HTTP redirects ('including any redirects WebFetch follows'). 'When a URL redirects to a different host, WebFetch returns a text result that names the original URL and the redirect target instead of following it.' It converts HTML to Markdown, so meta refresh and JS redirects are not documented as followed.

No evidence yet26

• ChatGPT
• Claude
• Gemini
• Perplexity
• Copilot
• Meta AI
• ChatGPT Atlas
• Comet
• Dia
• Gemini in Chrome
• Edge Copilot Mode
• 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 Spotted something out of date?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

75%

75 of 100 measured sites implement it

Scanned 23 Oct 2026 with the Sitebulb Labs extension, against the Tranco list (tranco-56Z8N).

Sites implementing it75

1. #2 cloudflare.com
2. #3 aws.amazon.com (via amazonaws.com)
3. #9 microsoft.com
4. #11 youtube.com
5. #12 apple.com
6. #13 instagram.com
7. #16 x.com (via twitter.com)
8. #18 linkedin.com
9. #24 azure.microsoft.com (via azure.com)
10. #26 m365.cloud.microsoft (via office.com)
11. #27 outlook.live.com (via live.com)
12. #32 github.com
13. #33 wikipedia.org
14. #37 fastly.com (via fastly.net)
15. #42 bing.com
16. #43 netflix.com
17. #44 triplinkintl.com
18. #48 gandi.net
19. #50 marketingplatform.google.com (via doubleclick.net)
20. #52 uk.pinterest.com (via pinterest.com)
21. #53 icloud.com
22. #55 wordpress.org
23. #56 teams.live.com (via skype.com)
24. #57 cloudflare.net
25. #60 digicert.com
26. #61 adobe.com
27. #63 tiktok.com
28. #67 domains.google (via googledomains.com)
29. #68 zoom.com (via zoom.us)
30. #69 uk.yahoo.com (via yahoo.com)
31. #71 endpoints.news
32. #75 roblox.com
33. #76 opera.com
34. #77 open.spotify.com (via spotify.com)
35. #83 ya.ru (via yandex.net)
36. #84 nginx.org
37. #85 ntp.org
38. #86 msn.com
39. #87 qq.com
40. #90 vimeo.com
41. #91 primevideo.com (via amazonvideo.com)
42. #93 bunny.net (via b-cdn.net)
43. #94 blogger.com (via blogspot.com)
44. #95 mozilla.org
45. #96 f5.com
46. #98 telegram.org (via t.me)
47. #99 store.epicgames.com (via epicgames.com)
48. #101 wordpress.com
49. #103 reddit.com
50. #106 sentry.io
51. #107 letsencrypt.org (via lencr.org)
52. #109 ui.com
53. #110 european-union.europa.eu (via europa.eu)
54. #112 chatgpt.com
55. #116 bitly.com (via bit.ly)
56. #117 ipify.org
57. #120 samsung.com
58. #122 intuit.com
59. #127 openai.com
60. #128 one.one.one.one (via cloudflare-dns.com)
61. #130 registrar-servers.com
62. #132 dropbox.com
63. #133 skybridge.click
64. #135 discord.com (via discord.gg)
65. #136 developer.adobe.com (via adobe.io)
66. #139 apache.org
67. #140 android.com
68. #150 t-online.de
69. #151 archive.org
70. #153 webex.com
71. #154 snapchat.com
72. #156 godaddy.com
73. #158 kaspersky.co.uk (via kaspersky.com)
74. #159 firebase.google.com (via crashlytics.com)
75. #160 tumblr.com

Overview

7/9

Gaining traction

Real support exists and adoption is growing.

How this rating is worked out7 of 9 points

Factor	Points	Why
Vendor support	1 / 3	1 vendor supporting, 0 partly or planned
Top-100 adoption	3 / 3	75% of measured sites
Spec maturity	3 / 3	Published standard

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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