A proposed metric facet for the State of Languages Metrics is Wiki Commons coverage, to include the following proposed metrics:

Overall coverage:

• Number of languages with captions on Commons (this ticket)
• Number of languages with descriptions on Commons (see T374279)

Per language:

• Status of Commons captions in the language (e.g., present, absent) (this ticket)
• Status of Commons descriptions in the language (e.g., present, absent) (see T374279)
• Number of captions in the language (this ticket)
• Number of descriptions in the language (see T374279)

Tasks:

• Build notebook to aggregate caption language counts from Commons data dump
  • wrangle
  • standardize language codes for joining with wiki project languages
• Build a notebook(s) for metrics calculation and visualization