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Official statement

To indicate the update date of a page in structured data, it is recommended to use the 'dateModified' property, even for schema types that do not explicitly mention it in their documentation.
50:48
🎥 Source video

Extracted from a Google Search Central video

💬 EN 📅 21/10/2021 ✂ 25 statements
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📅
Official statement from (4 years ago)
TL;DR

Google recommends using the 'dateModified' property in structured data for page update dates. This applies even to schema types that do not explicitly mention this property. Integrate it to boost your SEO.

❓ Frequently Asked Questions

Pourquoi Google recommande-t-il 'dateModified' ?
Cela aide Google à mieux percevoir la fraîcheur et la pertinence du contenu actualisé.
Est-ce que toutes les pages doivent utiliser 'dateModified' ?
Principalement celles qui sont souvent actualisées et ont un contenu dynamique.
Quel outil utiliser pour vérifier 'dateModified' ?
Les outils de test de données structurées de Google sont recommandés.
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