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# init(base64EncodedData:options:)

Initializes a data object with the given Base64 encoded data.

```
init?(base64EncodedData base64Data: Data, options: NSData.Base64DecodingOptions = [])
```

## Parameters

`base64Data`

A Base64, UTF-8 encoded data object.

`options`

A mask that specifies options for Base64 decoding the data. Possible values are given in [`NSData.Base64DecodingOptions`](/documentation/Foundation/NSData/Base64DecodingOptions).

## Return Value

A data object containing the Base64 decoded data. Returns `nil` if the data object could not be decoded.

## Discussion

The default implementation of this method will reject non-alphabet characters, including line break characters. To support different encodings and ignore non-alphabet characters, specify an `options` value of [`ignoreUnknownCharacters`](/documentation/Foundation/NSData/Base64DecodingOptions/ignoreUnknownCharacters).

---

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