Tracked site: https://anthropic.com/.
Checked against the Web 1.0 Specification
(2026 Edition), front page
only, roughly every two weeks.
F
Fails on multiple major faults.
Latest check: 2026-09-29.
3 major, 0 minor;
206 KB first-party transfer,
18 requests.
Rule by rule
| Rule | Fault | Result |
|---|
| JS-01 | JavaScript |
MAJOR
- inline <script>
- inline <script>
- inline <script>
- inline <script>
- <script src="https://d3e54v103j8qbb.cloudfront.net/js/jquery-3.5.1.min.dc5e7f18c8.js?site=67ce28cfec624e2b733f8a52">
- and 14 more
|
| TP-01 | Third-party requests |
MAJOR
- https://cdn.prod.website-files.com (via <link rel=preconnect>)
- https://cdn.prod.website-files.com/67ce28cfec624e2b733f8a52/css/ant-brand.shared.67f55a9666b2ae2332f5f893.9be121567.min.css (via <link rel=stylesheet>)
- https://cdn.prod.website-files.com/67ce28cfec624e2b733f8a52/681d52619fec35886a7f1a70_favicon.png (via <link rel=icon>)
- https://cdn.prod.website-files.com/67ce28cfec624e2b733f8a52/67d31dd7aa394792257596c5_webclip.png (via <link rel=icon>)
- https://cdn.sanity.io/files/4zrzovbb/website/9f6fb5a6efc8efddec5af4c52c5e2af177c6db81.webm (via <source src>)
- and 10 more
|
| CK-01 | Cookies |
MAJOR
- Set-Cookie on https://anthropic.com/
|
| WT-01 | Excessive transfer |
pass |
| AV-01 | Autoplaying media |
pass |
| HY-01 | Missing doctype |
pass |
| HY-02 | Missing title |
pass |
| HY-03 | Missing language |
pass |
| HY-04 | Missing charset |
pass |
| HY-05 | Missing alt text |
pass |
| FT-01 | Web fonts |
pass |
| RQ-01 | Excessive requests |
pass |
| FR-01 | First-party frame |
pass |
History
| Date | Grade | Majors | Minors |
Weight | Requests |
|---|
| 2026-09-29 |
F |
3 |
0 |
206 KB |
18 |
| 2026-09-15 |
F |
3 |
0 |
220 KB |
17 |
| 2026-09-01 |
F |
3 |
0 |
235 KB |
16 |
| 2026-08-17 |
F |
3 |
0 |
227 KB |
16 |