Tracked site: https://readthedocs.io/.
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.
4 major, 4 minor;
10.4 MB first-party transfer,
58 requests.
Rule by rule
| Rule | Fault | Result |
|---|
| JS-01 | JavaScript |
MAJOR
- <script src="https://kit.fontawesome.com/53af4251af.js">
- <script src="https://about.readthedocs.com/theme/js/vendor.js">
- <script src="https://about.readthedocs.com/theme/js/site.js">
- <script src="/_/static/javascript/readthedocs-addons.js">
- onclick on <a>
- and 2 more
|
| TP-01 | Third-party requests |
MAJOR
- https://avatars.githubusercontent.com/u/1654763?v=4 (via <img src>)
- https://github.com/mfisher87.png (via <img src>)
- https://kit.fontawesome.com/53af4251af.js (via <script src>)
|
| CK-01 | Cookies |
MAJOR
- Set-Cookie on https://readthedocs.io/
- Set-Cookie on https://about.readthedocs.com/theme/css/fonts/lato-hairline.woff2?73d2c04510d153b6da52
|
| WT-01 | Excessive transfer |
MAJOR
- total first-party transfer 10.35 MB (over 2 MB)
|
| 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 |
3 minor
- @font-face in https://about.readthedocs.com/theme/css/site.css
- @font-face in https://about.readthedocs.com/theme/css/site.css
- @font-face in https://about.readthedocs.com/theme/css/site.css
- @font-face in https://about.readthedocs.com/theme/css/site.css
- @font-face in https://about.readthedocs.com/theme/css/site.css
- and 17 more
|
| RQ-01 | Excessive requests |
1 minor
|
| FR-01 | First-party frame |
pass |
History
| Date | Grade | Majors | Minors |
Weight | Requests |
|---|
| 2026-09-29 |
F |
4 |
4 |
10.4 MB |
58 |
| 2026-09-15 |
F |
4 |
4 |
10.4 MB |
58 |
| 2026-09-01 |
F |
4 |
4 |
10.4 MB |
58 |
| 2026-08-17 |
F |
4 |
4 |
10.4 MB |
58 |