> ## Documentation Index
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> Use this file to discover all available pages before exploring further.

# PDFVersionEnum

PDFVersionEnum enumeration constants are used to specify the version of the PDF file.

```
typedef enum {
 PVN_Auto,
 PVN_Version13,
 PVN_Version14,
 PVN_Version15,
 PVN_Version16,
 PVN_Version17,
 PVN_Version20
} PDFVersionEnum;
```

## Elements

| Name             | Description                                                                          |
| ---------------- | ------------------------------------------------------------------------------------ |
| PVN\\\_Auto      | The version will be detected automatically.                                          |
| PVN\\\_Version13 | The PDF file will be saved in the version 1.3.                                       |
| PVN\\\_Version14 | The PDF file will be saved in the version 1.4.                                       |
| PVN\\\_Version15 | The PDF file will be saved in the version 1.5.                                       |
| PVN\\\_Version16 | The PDF file will be saved in the version 1.6.                                       |
| PVN\\\_Version17 | The PDF file will be saved in the version 1.7 (with 256-bit AES encryption support). |
| PVN\\\_Version20 | The PDF file will be saved in the version 2.0.                                       |

## Used in

[IPDFExportFeatures::PDFVersion](/fine-reader/engine/api-reference/parameter-objects/export-parameters/pdfexportfeatures#pdfversion)