The index_options parameter controls what information is added to the inverted index for search and highlighting purposes. Only term-based field types like text and keyword support this configuration.

The parameter accepts one of the following values. Each value retrieves information from the previous listed values. For example, freqs contains docs; positions contains both freqs and docs.

PUT my-index-000001
{
  "mappings": {
    "properties": {
      "text": {
        "type": "text",
        "index_options": "offsets"
      }
    }
  }
}

PUT my-index-000001/_doc/1
{
  "text": "Quick brown fox"
}

GET my-index-000001/_search
{
  "query": {
    "match": {
      "text": "brown fox"
    }
  },
  "highlight": {
    "fields": {
      "text": {} 
    }
  }
}