Language

Field index

$schema

Type: const · Required · Default: —

Identifies this record as a language in the openpresentation.org catalog.

{
  "$schema": "https://openpresentation.org/schema/opf-language/v1"
}

id

Type: string · Required · Default: — · Pattern: ^[a-z][a-z0-9-]*$

Stable slug used by OPF documents to reference this language via language. Lowercase kebab-case.

{
  "id": "english"
}

name

Type: string · Required · Default: —

Human-readable language name.

{
  "name": "English"
}

code

Type: string · Optional · Default: —

ISO 639-3 (or 639-2) three-letter language code. Carried for engines that prefer ISO codes.

{
  "code": "ENG"
}

bcp47

Type: string · Required · Default: —

BCP-47 language tag for this record. Use 'en-GB' for UK English; 'en-UK' is not a valid BCP-47 region form.

{
  "bcp47": "en"
}

direction

Type: enum · Optional · Default: —

Base text direction for the language.

{
  "direction": "ltr"
}

script

Type: string · Optional · Default: —

ISO 15924 script code when the writing system should be explicit.

{
  "script": "Latn"
}

fontScheme

Type: string · Optional · Default: —

Default font-scheme id for this language when targeting PowerPoint output. Resolves against catalogs.fontSchemes the same way design.fontScheme or design.fontScheme.id does.

{
  "fontScheme": "aptos"
}

googleFontScheme

Type: string · Optional · Default: —

Default font-scheme id for this language when targeting Google Slides output. Resolves against catalogs.fontSchemes the same way design.fontScheme or design.fontScheme.id does.

{
  "googleFontScheme": "roboto"
}

summary

Type: string · Optional · Default: —

One-sentence note about coverage or font defaults.

{
  "summary": "English language preset using a Latin-script font scheme."
}

description

Type: string · Optional · Default: —

Longer prose describing the language record and any font-pairing rationale.

{
  "description": "English (US) preset. Defaults to Aptos for PowerPoint output and Roboto for Google Slides output. Use this entry as a baseline; override fontScheme on individual decks when brand fonts differ."
}

tags

Type: array<string> · Optional · Default: —

Free-form labels for filtering and search.

{
  "tags": [
    "latin",
    "default"
  ]
}

preview

Type: object · Optional · Default: —

Visual previews of the record, used by picker UIs and inline rendering. All sub-fields are optional; engines fall back gracefully when previews aren't available.

{
  "preview": {}
}