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PropertyData for May 2026
valueRequired
Estimated domains
10M+
Description
Whether the property must be filled in to complete the action. Default is false.
Definition from the Schema.org vocabulary (English).
Trend over time
At least two months are needed to show a trend. The series will grow with every monthly update.
Used on types
Tiers indicate the number of unique domains using the term. They are intentionally approximate to reduce noise and protect site privacy. How to read the data.