[[lowercase-processor]] === Lowercase Processor Converts a string to its lowercase equivalent. [[lowercase-options]] .Lowercase Options [options="header"] |====== | Name | Required | Default | Description | `field` | yes | - | The field to make lowercase | `target_field` | no | `field` | The field to assign the converted value to, by default `field` is updated in-place | `ignore_missing` | no | `false` | If `true` and `field` does not exist or is `null`, the processor quietly exits without modifying the document include::common-options.asciidoc[] |====== [source,js] -------------------------------------------------- { "lowercase": { "field": "foo" } } -------------------------------------------------- // NOTCONSOLE