Source: Schema.org v30.1 vocabulary. Official numberOfPages property definition.
What does numberOfPages mean?
The number of pages in the book.
Used on types (domainIncludes)
Expected value types (rangeIncludes)
Schema.org domainIncludes and rangeIncludes are descriptive guidance, not strict validation prohibitions. Check the official reference for updates.
Related reference
Browse all Schema.org types and properties · Google feature support status