Adobe Portable Document Format (PDF)
PDF format (Portable Document Format) can be called a modern version of EPS format. It also contains printer instructions, namely information on fonts, document size and colors used. Files of this format can consist of text and graphics elements, video, sound, embedded fonts, search and document navigation options (hyperlinks and table of contents). So, PDF format can contain not only images, but the whole document with description of its layout, images and colors. The following parameters are used to adjust settings of this format:
- bpp - color depth (default - 24 bpp)
- compression - compression type (default - LZW)
- multipage - multipage option (default - "AS IS")
bpp
Bpp parameter specifies the number of bits used to transfer the color of one pixel. Its allowed values are:
- 1 - 1 bpp (Mono)
- 4 - 4 bpp (Indexed)
- 8 - 8 bpp (Indexed)
- 24 - 24 bpp (True color, RGB)
The default value is: 24.
Example:
compression
Compression parameter specifies compression algorithm for resulting files. Its allowed values are:
- CCITT_Fax - CCITT Fax algorithm is used to compress resulting files. This compression algorithm does not distort images and is used for monochromatic images only (color depth parameter is set to 1).
- LZW - LZW algorithm is used to compress resulting files. This is the most widespread compression algorithm for TIFF images. This compression algorithm does not distort images.
- FLATE - FLATE algorithm is used to compress resulting files. This modern algorithm chooses compression method basing on file contents.
The default value is: LZW.
Example:
multipage
Multipage parameter specifies whether resulting images should be saved as single files or one multipage file. Its allowed values are:
- as_is - all converted files will be saved in accordance with the structure of source files.
- separate_pages - all single-page images as well as all pages of multipage files will be saved as separate single-page files.
- multipage - all source images will be saved into one multipage file.
- append - all source images will be appended to the specified multipage file.
The default value is: as_is.
Example:
general example
ICPCL.exe -convertto pdf bpp:8 compression:FLATE multipage:separate_pages -source "C:\Original files" -dest "C:\Converted files"
tips
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When creating multipage files, the order of their pages is specified by the order of source file conversion (sorting specified with the help of -sort key).