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all empty subfolders will be deleted. If the input folder is a hot folder (see next item),
the cleanup process will be performed whenever the hot folder becomes idle, i.e.
when no more files are found to be processed at the moment.
c. Enable Check every <number> seconds to make the given folder a hot folder, i.e. to
let the job check that folder frequently for newly generated files (e.g. by an external
scanner or capture software). A job that has this options enabled will never stop
automatically, since it keeps on monitoring the given folder. You have to stop it
manually.
This option only makes sense, if you delete successfully converted input files, or
move them into another folder. See also Configuring Post-Processing, p. 38.
d. Enable Merge all pages if all pages from all processed files of a folder should be
converted to a single PDF output document. The output file will be named
<name_of_the_input_folder>.pdf. The input files of a folder will be processed in
alphabetical, case-sensitive order. This defines the page order of the output PDF.
This option can be used to merge pages from scanners that put numbered single
page files (such as page000.tif, page001.tif, etc.) into a single folder.
e. Input file formats can be selected from the given list. The format is derived from the
file͛s edžteŶsioŶ͘
TIFF enables the conversion of *.tif and *.tiff files. Currently PDF Compressor
supports bilevel, grayscale and RGB images. CMYK and CIELab color as well
as palletized images are not supported yet.
JPEG enables the conversion of *.jpg files.
JPEG 2000 enables the conversion of JPEG 2000 files. The extensions *.jp2,
*.jpf, *.jpx. *.j2k, *.jpc and *.j2c are recognized.
PDF enables the conversion of PDF files. If Always is chosen under Rasterize
PDF Input will be rasterized to the resolution specified on the Advanced tab
of the Advanced Input Options dialog (see Advanced Input Options, p. 19)
before applying the LuraTech MRC compression technique. If Automatic has
been chosen for Rasterize PDF Input, PDF files may be rasterized, e.g. if
conversion to PDF/A is not possible otherwise.
BMP enables the conversion of *.bmp files. Palletized images as well as some
exotic variants are not supported yet.
PNM enables the conversion of *.ppm and *.pgm files.
GIF enables the conversion of *.gif files. For animated GIF files only the first
frame is converted and a warning is logged.
PNG enables the conversion of *.png files.
The formats MS Word, MS Excel, MS PowerPoint, E-Mail, OpenOffice Writer,
OpenOffice Calc, OpenOffice Impress are only available if the Born Digital
conversion option is installed. Any combination of these input document
types can be converted to PDF or PDF/A. Refer to Born Digital Conversion, p.
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8 and Requirements of the Born Digital Conversion Option, p. 5, for details
on Born Digital Conversion.
Extra Extensions List serves to supply a list of additional file extensions to
process. This entry is only enabled, when Born Digital Conversion is installed.
The individual extensions entered must be separated by blank spaces.
3. The Advanced Input Options button opens a dialog for configuring more input options. See
Sections Configuring Advanced PDF Input Options, p. 19, for details.
4. If you configure multiple PDF Compressor Enterprise installations to work with the same
input directory (typically a net share), you need to enable Use lock files for PDF Compressor
synchronization. This ensures that input files currently processed by one PDF Compressor are
not accessed by another PDF Compressor. This is implemented by the use of lock files *.lock
and *.dlock that PDF Compressor uses to lock certain input files or all files of a directory
(when Merge all pages is enabled).
Note: The PDF Compressor Service must have write access to the input directories when
using lock files.
Important note: Files ending with *.lock and *.dlock will be overwritten without notice when
using lock files. You should not use these extensions for your own files.
Note: A file PDF_Compressor.ulock can be used as a user defined lock for all files of a
directory. In contrast to the lock files *.lock and *.dlock, this file can be managed by the user.
If Use lock files for PDF Compressor synchronization is enabled, PDF Compressor will never
process any file it finds within a directory that contains a file PDF_Compressor.ulock. This can
be used to configure a hot folder with Merge all pages enabled: The external process creates
a new directory underneath the PDF Compressor hot folder containing a file
PDF_Compressor.ulock and copies all files that need to be merged afterwards. When the last
file copy is done, the external process removes PDF_Compressor.ulock. Next time PDF
Compressor inspects the hot folder, the processing of the given files begins.
5. The Rasterize PDF Input setting offers different modes for handling PDF input documents:
a. Automatic is the default setting. In this mode PDF Compressor will automatically
determine in which cases to convert typeset or vector contents of PDF input files into
raster graphics. It will try to avoid such conversions, but will resort to them as a
fallback option for documents that cannot be converted otherwise.
b. Always – this mode will convert all pages of all PDF input documents to raster
graphics before compressing or converting them. For PDF input this mode is
equivalent to the former MRC Compression mode.
c. With the Never setting the PDF Compressor will not try to rasterize any non-raster
input. In this way you avoid unintentional conversion of typeset or vector content
into raster graphics. On the other hand, this may result in failure to convert certain
kinds of PDF input files to PDF/A.
Please note that with the Automatic or Never setting chosen, raster graphics already present in
the input documents may still be resampled or compressed, if Color image optimization or
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Bitonal image optimization are selected on the Compression tab. (Such graphics may e.g. be
scanned pages or large images inside a PDF document.)
Configuring Advanced PDF Input Options
Clicking the Advanced Input Options button brings up a dialog with further settings concerning
input options.
Advanced Input Options
1. Enable Read only up to <number> pages from input file to restrict the number of pages read
from each input file to the given limit. When you merge all files from an input directory (see
Configuring Input Data, p. 15) to a single PDF output file, setting the maximum number of
input pages to 1 can be used to create documents that only contain the cover pages of these
files.
2. Select Case insensitive sorting of files and folders if you want the input file processing to be in
case insensitive alphanumeric order. Otherwise, the ordering will be case sensitive (with
capital letters lexically smaller than lower case letters and therefore "Ac" coming before
"ab").
3. Enable Read local copy of each input file to solve problems related to the location of input
files on a network share. The files will be temporarily copied to the local temporary folder
where they will be opened and read. This is especially useful when the performance for
transmitting small parts of data in the network is low.
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4. Default Resolution: If the input image file does not contain any resolution information, the
value (in dpi) given here will be used. In addition this value is used when an input PDF file is
rasterized (PDF files do not have specific resolution information in general).
a. Enable Optimized dpi for PDF input to automatically choose an optimal dpi value for
the rendering of each PDF input page. The optimal value is calculated from the
resolutions of all images embedded in the PDF input page. If there are no images on
the page, the setting of the Default Resolution will be used. Otherwise the highest
resolution of the detected images is calculated and clipped to the resolution range
given by the Resampling option of the Input tab. We recommend enabling this
option only when the input PDF documents originate from a scan process.
b. Born digital born PDF documents may contain images of small physical size (e.g. less
than an inch in either dimension) but containing many pixels (e.g. 1000 x 1000 pixels)
and thus yielding a non-realistic resolution (more than 1000 dpi in the example). For
born digital documents you should either use a fixed Default Resolution value
without enabling Optimized dpi for PDF input, or specify a narrow resolution range in
the Resampling settings.
5. Resampling lets LJou ĐhaŶge the iŶput͛s resolutioŶ͘ There are tǁo reasoŶs, ǁhLJ LJou ŵight
ǁaŶt to ĐhaŶge the iŶput͛s resolutioŶ͗
a. If the input resolution is too low (below 150 dpi), the PDF Compressor output might
have a quality that is too low for your needs (although the file size will be extremely
small). Changing the resolution e.g. to 300 dpi will produce better results.
b. If your original scans are high resolution (e.g. more than 600 dpi), you might want to
produce a lower resolution PDF output.
The Minimal and Maximal dpi settings address these requirements. Whenever the resolution
of the input files is outside the given [min, max] range, the resolution will be changed by
resampling to the minimum value or the maximum value.
Note: Please bear in mind that the Resampling setting only affects grayscale and color
images. The resolution of bilevel or B/W images will not be changed.
In case of JPEG 2000 input, the ability to decode a JPEG 2000 file to a lower resolution will be
used. This enables fast access to huge JPEG 2000 images, when only a lower resolution is
needed.
6. When Directly create PDF pages from JPEG input without recoding is enabled JPEG input
images are not submitted to MRC or JPEG 2000 compression but are directly embedded as
pages in the PDF output document. In this fashion repeated compression of such input
documents is avoided. On the other hand these pages are not reduced in size.
7. Skip JPEG validation when adding images without recoding omits all integrity checks for JPEG
images directly to embed into PDF pages. This involves the risk of creating corrupt PDF
output by incorporating corrupt JPEG input images.
8. With the Use orientation stored in TIFF input files option the orientation information
optionally contained in TIFF input files determines the orientation of the corresponding
pages in the PDF output document.
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