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# PDFResolutionTypeEnum

PDFResolutionTypeEnum enumeration constants denote the types of picture resolution used in output PDF (PDF/A) files.

```
typedef enum {
 PRT_Desired,
 PRT_Exact,
 PRT_Source
} PDFResolutionTypeEnum;
```

## Elements

<table><thead><tr><th><p><strong>Name</strong></p></th><th><p><strong>Description</strong></p></th></tr></thead><tbody><tr><td><p>PRT\_Desired</p></td><td><p>Use the desired value of the resolution. In this case, picture resolution is defined as follows:</p><ul><li>if the original resolution of the source image is less than or equal to the desired resolution, the original resolution is preserved,</li><li>if the original resolution is above the desired resolution, the program selects the value nearest to the desired resolution.</li></ul></td></tr><tr><td><p>PRT\_Exact</p></td><td><p>Use the specified resolution.</p><Note>The specified resolution cannot be higher than the original resolution.</Note></td></tr><tr><td><p>PRT\_Source</p></td><td><p>Original resolution must be preserved.</p></td></tr></tbody></table>

## Used in

[IPDFExportParams::ResolutionType](/fine-reader/engine/api-reference/parameter-objects/export-parameters/pdfexportparams#resolutiontype)

[IPictureResolutionParams::Type](/fine-reader/engine/api-reference/parameter-objects/export-parameters/pictureresolutionparams#type)