Class ImageType

Image file formats for converting PDF pages to images. Choose format based on quality needs, file size, and compatibility requirements.

// Convert PDF to high-quality PNG images:
pdf.RasterizeToImageFiles("page_*.png", ImageType.Png);

// Convert to JPEG for smaller file sizes:
pdf.RasterizeToImageFiles("image_*.jpg", ImageType.Jpeg, 90);

// Create multi-page TIFF for archiving:
pdf.RasterizeToImageFiles("document.tiff", ImageType.MultiPageTiff);

// Let file extension determine format:
pdf.RasterizeToImageFiles("output.png", ImageType.Default);

See: https://ironpdf.com/how-to/pdf-to-image/

Inheritance

System.Object

ImageType

Namespace: IronPdf.Imaging

Assembly: IronPdf.dll

Syntax

public sealed class ImageType : Enum

The ImageType enumeration in IronPDF declares the output image file format when rasterizing PDF pages.

Part of the IronPdf.Imaging namespace, it includes Png, Jpeg, Tiff, MultiPageTiff, Gif, Bitmap, and Default (7 total).

Pass a member to RasterizeToImageFiles or related extraction methods to control the saved format. See Image from PDF for typical usage in C# rendering.

Fields

Bitmap

Windows Bitmap format (.bmp). Large files but pixel-perfect quality. Best for Windows-only applications requiring lossless images.

// High quality, large file size:
pdf.RasterizeToImageFiles("page_*.bmp", ImageType.Bitmap);

Declaration

public const ImageType Bitmap

Field Value

Type	Description
ImageType

Default

Auto-detects format from file extension (.png, .jpg, etc). Falls back to PNG if extension not recognized.

// Extension determines format:
pdf.RasterizeToImageFiles("page.jpg", ImageType.Default);  // JPEG
pdf.RasterizeToImageFiles("page.png", ImageType.Default);  // PNG
pdf.RasterizeToImageFiles("page", ImageType.Default);      // PNG (default)

Declaration

public const ImageType Default

Field Value

Type	Description
ImageType

Gif

GIF format with 256 color limit. Small files for simple graphics. Best for basic images with few colors. Not recommended for photos.

// Simple graphics only:
pdf.RasterizeToImageFiles("simple_*.gif", ImageType.Gif);

Declaration

public const ImageType Gif

Field Value

Type	Description
ImageType

Jpeg

JPEG format for photos and complex images. Smaller files with adjustable quality. Best for web display, emails, or when file size matters.

// Compress for web use (quality 0-100):
pdf.RasterizeToImageFiles("web_*.jpg", ImageType.Jpeg, 85);

Declaration

public const ImageType Jpeg

Field Value

Type	Description
ImageType

MultiPageTiff

Multi-page TIFF combining all PDF pages into one file. Perfect for document management systems and fax transmission.

// All pages in single TIFF:
pdf.RasterizeToImageFiles("complete.tiff", ImageType.MultiPageTiff);
// Result: One TIFF file containing all pages

Declaration

public const ImageType MultiPageTiff

Field Value

Type	Description
ImageType

Png

PNG format with lossless compression and transparency support. Best for screenshots, diagrams, text, or when quality is critical.

// High quality with transparency:
pdf.RasterizeToImageFiles("page_*.png", ImageType.Png);

Declaration

public const ImageType Png

Field Value

Type	Description
ImageType

Tiff

TIFF format for professional printing and archiving. Each PDF page becomes a separate TIFF file.

// Individual TIFF files per page:
pdf.RasterizeToImageFiles("page_*.tiff", ImageType.Tiff);

Declaration

public const ImageType Tiff

Field Value

Type	Description
ImageType

value__

Declaration

public int value__

Field Value

Type	Description
System.Int32