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title: toString
collection: mulesoft
version: current
locale: en-us
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canonical_url: https://docs.mulesoft.com/dataweave/2.11/dw-mime-functions-tostring
source_site: docs.mulesoft.com
content_type: documentation
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description: MuleSoft Documentation Site
release: "2.11"
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---
---
product: DataWeave
version: 2.11
---

# toString

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

## toString(mimeType: MimeType): String

Transforms a `MimeType` value to a string representation.

_Introduced in DataWeave version 2.7.0._

### Parameters

<table><colgroup><col> <col> <col></colgroup><thead><tr><th>Name</th><th>Type</th><th>Description</th></tr></thead><tbody><tr><td><p><code>mimeType</code></p></td><td><p><code>MimeType</code></p></td><td><p>The MIME type value to transform to a <code>String</code>.</p></td></tr></tbody></table>

### Example

This example transforms a `MimeType` value without `parameters` to a string representation.

#### Source

```DataWeave
%dw 2.0
import * from dw::module::Mime
output application/json
---
toString({'type': "application", subtype: "json", parameters: {}})
```

#### Output

```Json
"application/json"
```

### Example

This example transforms a `MimeType` value that includes a `parameters` to a string representation.

#### Source

```DataWeave
%dw 2.0
import * from dw::module::Mime
output application/json
---
toString({'type': "multipart", subtype: "form-data", parameters: {boundary: "my-boundary"}})
```

#### Output

```Json
"multipart/form-data;boundary=my-boundary"
```