Source: Schema.org v30.1 vocabulary. Official significantLink property definition.
What does significantLink mean?
One of the more significant URLs on the page. Typically, these are the non-navigation links that are clicked on the most.
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