| Vocabulary | URLs / Total | URLs / Percentage |
|---|---|---|
| http://schema.org/ | 19,126,619 | 71.7% |
| http://data-vocabulary.org/ | 7,447,436 | 27.92% |
| http://webmaster.yandex.ru/vocabularies/ | 27,842 | 0.1% |
| http://www.productontology.org/id/ | 20,684 | 0.08% |
| http://mnobeta.no/ | 11,738 | 0.04% |
| http://historical-data.org/ | 11,690 | 0.04% |
| http://www.leftlanenews.com/ | 10,293 | 0.04% |
| http://growbutton.com/ns | 4,754 | 0.02% |
| http://microformats.org/profile/ | 1,693 | 0.01% |