Does Text type support arbitrary strings? Where is it stated?

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In schema, it seems many types that are usually strings use the Text schema type. Under “More specific Data Types”, there is no specific string type. Does Text specifically support strings? Why is there no string type under “More specific Data Types”?

Yes, the Text schema type in is specifically designed to support strings. It’s intended for representing plain textual content, and it effectively serves as the catch-all type for most string-like data within the schema.

Here’s why there’s no separate string type under “More specific Data Types”:

  • Text is Broadly Applicable: The Text type can accommodate a wide range of string-based information, making a separate string type less essential. It can handle:

    • Free-form text like descriptions or comments
    • Addresses
    • Email addresses
    • Names
    • Product descriptions
    • Reviews
    • And more
  • Emphasis on Specificity: prioritizes using more specific types whenever possible to convey richer semantic information. For example:

    • Use PostalAddress for a postal address, rather than just a string.
    • Use URL for a web address, rather than a plain string.
    • Use Date for a date, rather than a string representing the date.
    • Use Duration for a duration of time, rather than a string.

By encouraging more specific types, aims to create more structured and machine-readable data. However, Text remains a crucial fallback for representing textual content that doesn’t align with a more specific type.

In essence, consider Text to be the primary string-handling type within, but always opt for a more specific type whenever it accurately captures the nature of your data. This approach contributes to better semantic representation and understanding of your content.

Exactly where is it stated that “Text” supports arbitrary strings?

You’re right, there isn’t a definitive statement within the documentation that explicitly says “Text” supports arbitrary strings. focuses more on providing definitions and usage guidelines for the various data types (

While there’s no formal mention of strings, the overall design and usage patterns strongly suggest that Text acts as the catch-all for string-like data. Here’s why:

  • Text is used extensively across various properties: examples consistently use Text for properties that expect free-form text content. For instance, the description property typically uses Text (
  • Absence of a dedicated string type: As you mentioned, there’s no separate string type defined in, implying Text assumes that role.
  • Emphasis on data categorization: prioritizes using more specific data types whenever possible. The lack of a general string type reinforces this approach.

While the documentation doesn’t explicitly state it, these points collectively point towards Text acting as the workhorse for string data in