Market Share by Top Websites

1 Canonical Tag is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, OpenSearch is clearly lagging behind, losing to Canonical Tag in all segments.

Websites Categories

1 Canonical Tag has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Shopping, Internet & Telecom and 234 other categories.

2 OpenSearch is leading in People & Society, Religion & Spirituality, News & Media, Chats & Forums and 4 other categories.


1 Canonical Tag is leading in most countries, including United States, Germany, Russia, Japan and 217 other countries.

2 OpenSearch is leading in Indonesia, Timor-Leste and Niue.