Open Graph metadata
book:isbn
Provides the book’s International Standard Book Number as a string.
Code examples
Good example
<meta property="book:isbn" content="9783161484100">A valid ISBN-13 written without display separators.
Good example
<meta property="book:isbn" content="316148410X">A valid ISBN-10. Open Graph stores the value as a string and does not require ISBN-13.
Avoid this example
<meta property="book:isbn" content="978-3-16-148410-X">ISBN-13 check digits are numeric, so X makes this value invalid.
Recommendations
- 01Use the Assigned ISBNCopy the identifier for the exact edition. Different formats and editions can have different ISBNs.
- 02Verify the ISBNCheck the digits and checksum against the publisher or ISBN agency record.
Related documentation
Related meta tags
book:author
propertyLinks a book to an author profile. The value is a URL, and you can repeat the property for multiple authors.
<meta property="book:author" content="https://example.com/authors/margaret-atwood">Points to the author’s profile page.
book:isbn
propertyProvides the book’s International Standard Book Number as a string.
<meta property="book:isbn" content="9783161484100">A valid ISBN-13 written without display separators.
book:release_date
propertyRecords when a book was released. Open Graph defines the value as an ISO 8601 datetime.
<meta property="book:release_date" content="2026-07-04">An ISO 8601 calendar date when no exact release time is needed.
book:tag
propertyAdds a tag word or phrase associated with a book. Repeat the property to provide more than one tag.
<meta property="book:tag" content="Science Fiction">A clear genre for the book.