Document types
This chart shows the most popular document types used by valid pages. It is regularly updated as new sites are added and current sites are re-validated. The W3C HTML validator is the underlying validation engine used for this chart.
| Document type | Sites |
|---|---|
| HTML 2.0 | 1 |
| HTML 4.01 Frameset | 1 |
| HTML 4.01 Transitional | 41 |
| HTML 4.01 Strict | 6 |
| XHTML 1.0 Transitional | 77 |
| XHTML 1.0 Strict | 42 |
| XHTML 1.1 | 7 |