> ## Documentation Index
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# BufferEncoding

Specifies the character encoding for string manipulation. Used when converting strings to binary data and vice-versa, for example, when handling file uploads or certain string operations in \`extract\` or \`evaluate\`.

## Definition

```graphql theme={null}
enum BufferEncoding {
  ASCII
  UTF8
  UTF16LE
  UCS2
  BASE64
  BASE64URL
  LATIN1
  HEX
}
```

## Values

### `ASCII`

American Standard Code for Information Interchange. A 7-bit character encoding.

### `UTF8`

Unicode Transformation Format - 8-bit. A variable-width character encoding capable of encoding all possible Unicode code points.

### `UTF16LE`

Unicode Transformation Format - 16-bit, little-endian. A variable-width character encoding for Unicode.

### `UCS2`

Universal Character Set coded in 2 octets. A fixed-width character encoding for Unicode, largely superseded by UTF-16.

### `BASE64`

Encodes binary data into a printable ASCII string format. Commonly used for data URLs or embedding images.

### `BASE64URL`

A URL-safe variant of BASE64 encoding.

### `LATIN1`

ISO/IEC 8859-1. A single-byte encoding that covers many Western European languages.

### `HEX`

Hexadecimal encoding. Each byte of data is represented by two hexadecimal digits.