---
title: Trim processor
description: Trims whitespace from field. If the field is an array of strings, all members of the array will be trimmed. 
url: https://www.elastic.co/elastic/docs-builder/docs/2322/reference/enrich-processor/trim-processor
---

# Trim processor
Trims whitespace from field. If the field is an array of strings, all members of the array will be trimmed.
<note>
  This only works on leading and trailing whitespace.
</note>



| Name             | Required | Default | Description                                                                                                                                                                                                                    |
|------------------|----------|---------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `field`          | yes      | -       | The string-valued field to trim whitespace from                                                                                                                                                                                |
| `target_field`   | no       | `field` | The field to assign the trimmed value to, by default `field` is updated in-place                                                                                                                                               |
| `ignore_missing` | no       | `false` | If `true` and `field` does not exist, the processor quietly exits without modifying the document                                                                                                                               |
| `description`    | no       | -       | Description of the processor. Useful for describing the purpose of the processor or its configuration.                                                                                                                         |
| `if`             | no       | -       | Conditionally execute the processor. See [Conditionally run a processor](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/2322/manage-data/ingest/transform-enrich/ingest-pipelines#conditionally-run-processor). |
| `ignore_failure` | no       | `false` | Ignore failures for the processor. See [Handling pipeline failures](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/2322/manage-data/ingest/transform-enrich/ingest-pipelines#handling-pipeline-failures).       |
| `on_failure`     | no       | -       | Handle failures for the processor. See [Handling pipeline failures](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/2322/manage-data/ingest/transform-enrich/ingest-pipelines#handling-pipeline-failures).       |
| `tag`            | no       | -       | Identifier for the processor. Useful for debugging and metrics.                                                                                                                                                                |

```js
{
  "trim": {
    "field": "foo"
  }
}
```