Full Name	Adobe PDF (Adobe Portable Document Format)
Format ID	IG_FORMAT_PDF = 56
File Extension(s)	*.pdf
Data Type	Vector Image
Data Encoding	Binary
Color Profile Support	No
Multi-Page Support	Yes
Alpha Channel Support	No

To enable the support of the PDF format, attach the ImageGear PDF Component to Core ImageGear. See the PDF Getting Started with PDF section.

ImageGear Supported Versions:

• Adobe® PDF version 1.7
• Adobe® PDF version 1.6
• Adobe® PDF version 1.5

ImageGear Supported Features:

• IG_FLTR_DETECTSUPPORT - autodetection
• IG_FLTR_PAGEREADSUPPORT - single page file reading
• IG_FLTR_MPAGEREADPSUPPORT - multi-page file reading
• IG_FLTR_PAGEINSERTSUPPORT - single-page file writing
• IG_FLTR_MPAGEWRITEPSUPPORT - multi-page file writing
• IG_FLTR_PAGEDELETESUPPORT - page deleting from multi-page file
• IG_FLTR_PAGESWAPSUPPORT - page swapping in multi-page files

ImageGear Read Support:

• IG_COMPRESSION_NONE:
  • Indexed RGB: 1, 4, 8 bpp;
  • Grayscale: 8 bpp;
  • RGB: 24 bpp;
  • CMYK: 32 bpp.
• IG_COMPRESSION_DEFLATE:
  • Indexed RGB: 1, 4, 8 bpp;
  • Grayscale: 8 bpp;
  • RGB: 24 bpp;
  • CMYK: 32 bpp.
• IG_COMPRESSION_RLE:
  • Indexed RGB: 1, 4, 8 bpp;
  • Grayscale: 8 bpp;
  • RGB: 24 bpp;
  • CMYK: 32 bpp.
• IG_COMPRESSION_CCITT_G3:
  • Indexed RGB: 1 bpp
• IG_COMPRESSION_CCITT_G4:
  • Indexed RGB: 1 bpp.
• IG_COMPRESSION_CCITT_G32D:
  • Indexed RGB: 1 bpp.
• IG_COMPRESSION_JPEG:
  • Indexed RGB: 8 bpp;
  • Grayscale: 8 bpp;
  • RGB: 24 bpp;
  • CMYK: 32 bpp.
• IG_COMPRESSION_JPEG2K:
  • Indexed RGB: 1, 4, 8 bpp;
  • Grayscale: 8 bpp;
  • RGB: 24 bpp;
  • CMYK: 32 bpp.
• IG_COMPRESSION_LZW:
  • Indexed RGB: 1, 4, 8 bpp;
  • Grayscale: 8 bpp.

ImageGear Write Support:

• IG_COMPRESSION_NONE:
  • Indexed RGB: 1, 4, 8 bpp;
  • Grayscale: 8 bpp;
  • RGB: 24 bpp;
  • CMYK: 32 bpp.
• IG_COMPRESSION_DEFLATE:
  • Indexed RGB: 1, 4, 8 bpp;
  • Grayscale: 8 bpp;
  • RGB: 24 bpp;
  • CMYK: 32 bpp.
• IG_COMPRESSION_RLE:
  • Indexed RGB: 1, 4, 8 bpp;
  • Grayscale: 8 bpp;
  • RGB: 24 bpp;
  • CMYK: 32 bpp.
• IG_COMPRESSION_CCITT_G3:
  • Indexed RGB: 1 bpp.
• IG_COMPRESSION_CCITT_G4:
  • Indexed RGB: 1 bpp.
• IG_COMPRESSION_CCITT_G32D:
  • Indexed RGB: 1 bpp.
• IG_COMPRESSION_JPEG:
  • Indexed RGB: 8 bpp;
  • Grayscale: 8 bpp;
  • RGB: 24 bpp;
  • CMYK: 32 bpp
• IG_COMPRESSION_JPEG2K:
  • Indexed RGB: 1, 4, 8 bpp;
  • Grayscale: 8 bpp;
  • RGB: 24 bpp;
  • CMYK: 32 bpp.
• IG_COMPRESSION_LZW:
  • Indexed RGB: 1, 4, 8 bpp;
  • Grayscale: 8 bpp.

ImageGear Filter Control Parameters:

Filter Control Parameter	Type	Default Value	Available Values	Description
ALLOW_XFA	AT_BOOL	FALSE	TRUE, FALSE	Specifies whether to allow opening PDF documents with XFA content embedded. TRUE - PDF documents with XFA content will open without any error, but XFA content will not be available or visible. FALSE - (default) PDF documents with XFA content will not open, and an ImageGear error will appear.
DEPTH	UINT	24	1, 8, 24	Specifies bit depth in bits per pixels during the PDF document conversion into the raster image. A higher value indicates a higher quality raster image and a larger amount of memory required for rasterization. The DIB of the output raster image has this value as a bit count.
DRAW_MODE	UINT	1	1, 2	Specifies the default PDF rendering method used by the ImageGear PDF component to draw PDF page content. 1 - Draws entire page content into the cache. This function is optimized for fast scrolling. 2 - Draws visible page content area. This function is optimized for fast rendering, but would re-render the content each time it is scrolled.
INC_REND	AT_BOOL	FALSE	TRUE, FALSE	Specifies whether incremental rendering or rendering at once should be performed.
INDEPENDENT_PAGESIZE	AT_BOOL	FALSE	TRUE, FALSE	(Used with PDF write only.) If this parameter is FALSE, when saving a raster image into the PDF document, the width and height of the newly created page is set to the width and height of the previous page in the PDF document. If the previous page does not exist, the width and height are calculated from the image resolution and size as follows: Width = <width of the raster image> * 72 / <X DPI of the raster image> Height = <height of the raster image> * 72 / <Y DPI of the raster image> If the image resolution is not defined, the width and height are set to the width and height of the Letter page, which is 612x792. If this parameter is TRUE, use the PAGE_HEIGHT and PAGE_WIDTH parameters to set the page size.
NO_RESOLVE_INVALID_PARENT_REF	AT_BOOL	FALSE	TRUE, FALSE	Specifies to not resolve invalid parent references in the structure tree. Set this to true only if there are performance issues working with PDF files with very large page counts.
NO_RMV_PAGE_INHERIT	AT_BOOL	FALSE	TRUE, FALSE	Specifies to not remove page inheritance when inserting pages. Set this to true only if there are performance issues working with PDF files with very large page counts.
PAGE_HEIGHT	UINT	0	Any non-negative value	(Used with PDF write only.) This parameter sets the height of the page (in 1/72 inches). If this option is 0, the height is calculated from the image resolution and size as follows: Height = <height of the raster image> * 72 / <Y DPI of the raster image> If the image resolution is not defined, the height is set to the height of an Letter page, which is 792. This option is not used if INDEPENDENT_PAGESIZE is FALSE.
PAGE_WIDTH	UINT	0	Any non-negative value	(Used with PDF write only.) This parameter sets the width of the page (in 1/72 inches). If this option is 0, the width is calculated from the image resolution and size as follows: Width = <width of the raster image> * 72 / <X DPI of the raster image> If the image resolution is not defined, the width is set to the width of the Letter page, which is 612. This option is not used if INDEPENDENT_PAGESIZE is FALSE.
PASSWORD	LPCHAR	""	Any	Specifies the password string for the password of the protected PDF documents.
PRINT_DEPTH	UINT	8	1, 8, 24	Specifies bit depth in bits per pixels during the PDF document printing. A higher value indicates a higher quality raster image and a larger amount of memory required for printing.
PRINT_RESOLUTION_X	UINT	300	Any positive value, inclusively between 1 and 2147483647	Specifies the horizontal resolution in dots per inch during PDF document printing. A higher value indicates a higher quality image to be printed.
PRINT_RESOLUTION_Y	UINT	300	Any positive value, inclusively between 1 and 2147483647	Specifies the vertical resolution in dots per inch during the PDF document printing. A higher value indicates a higher quality image to be printed.
RESOLUTION_3D	UINT	72	Any except 0	Specifies the resolution in dots per inch used for generating a pre-rendered bitmap of the default view of the 3D artwork. Producers should provide bitmaps of appropriate resolution for all intended uses of the document, i.e., a high-resolution bitmap for high-quality printing and a default screen-resolution bitmap for on-screen viewing.
RESOLUTION_X	UINT	72	Any	Specifies the horizontal resolution in dots per inch during the PDF/PS document conversion into a raster image. The higher this value, the higher-quality raster image you get after rasterization. The DIB of the output raster image has this value as an X resolution.
RESOLUTION_Y	UINT	72	Any	Specifies the vertical resolution in dots per inch during the PDF/PS document conversion into a raster image. The higher this value, the higher-quality raster image you get after rasterization. The DIB of the output raster image has this value as an Y resolution.
SAVE_FLAGS	UINT	IG_PDF_OPTIMIZED	A bit composition of an OR of the following values: IG_PDF_OPTIMIZED = 32 - perform garbage collection on unreferenced objects. IG_PDF_LINEARIZED = 4 - write the file linearized for page serving over remote connections. IG_PDF_DONT_SAVE_FILE_ATTRIBUTES = 65536 - prevent the file attributes and security settings of a PDF document opened from an existing PDF file from being copied over when saved to a new PDF file. IG_PDF_OPTIMIZE_XOBJECTS = 4194304 - merge identical forms and images, as determined by an MD5 hash of their contents.	(Used with PDF write only.) Specifies an option for saving a PDF file that allows you to remove unreferenced objects, often reducing file size, as well as to write a linearized file for page-served remote (network) access.
SAVE_MAJOR	UINT	0	0, 1	Specifies major PDF version number of the document for saving. If major equals 0, both major and minor are ignored and the document is saved to the library's default version. Make sure that the document conforms to the version number you are setting.
SAVE_MINOR	UINT	0	6, 5, 4, etc.	Specifies minor PDF version number of the document for saving. Make sure that the document conforms to the version number you are setting.
SMOOTH_FLAGS	UINT	13	A bit composition of an OR of the following values: 1 - Draw smooth text 2 - Draw smooth line art 4 - Draw smooth image 8 - Enhance thin lines	Specifies smooth settings for PDF rasterization.
TEXT_ENCODING	UINT	IG_PDF_TEXTENC_NONE	IG_PDF_TEXTENC_NONE = 1 - no encoding used IG_PDF_TEXTENC_ASCII_85 = 2 - ASCII 85 encoding used IG_PDF_TEXTENC_ASCII_HEX = 3 - ASCII HEX encoding used	(Used with PDF write only.) Specifies which encoding scheme should be used to convert binary image data to the text format when saving raster image into a PDF document.
USE_CROP_BOX	AT_BOOL	TRUE	TRUE, FALSE	Specifies whether to use PDF crop box rectangle for page layout. TRUE - use PDF crop box rectangle for page layout FALSE - use PDF media rectangle for page layout

Comments:

Please see the section Using ImageGear PDF Component.