Use this option to optimally prepare the PDF documents to be edited for the next steps in the workflow. "PDF Optimization" has some parameters that are also found in "Normalizing".
Optimization of an unlimited number of PDF/VT records
The PDF Optimizer can process all records of a PDF/VT document, even if very many records are defined in the PDF/VT data. The following functions of the PDF Optimizer are applied to PDF/VT files to do this:
•Changes that have a global impact on the whole document (Output Intent, meta data) are removed.
•Comments or page-related meta data are removed.
•The resolution of images is reduced. In this case, make sure that this is done separately for each data record. If an image with a downscaled resolution is also found in another record, reference is made to the image already downscaled. For that reason, variable images are converted only in the first data record.
It does not make sense to apply operations that process page contents individually to PDF/VT files because this would destroy any option of reusing the contents. Such operations are, for example:
•Removal of objects that cannot be seen
•Conversion of text to graphic or graphic to bitmaps
•Transparency flattening
In this tab, you can remove different elements from the PDF documents that may not be needed any longer for further processing. By doing this, you can eliminate conflicts, and the documents "slim down" and as a result can be processed faster.
"Document" group
"Remove PDF/X Output Intent" option
A PDF/X Output Intent matches color reproduction to the color space of the print output. The Output Intent generally has a suitable ICC profile. The PDF/X Output Intent must be used in a PDF/X-compliant output workflow.
You can enable this option if you are not going to configure any PDF/X-compliant outputs
"Remove Alternate Low Resolution Images for Acrobat and Signa Station" option
PDF documents can have additional, low-resolution images for fast display in Adobe Acrobat or Prinect Signa Station. You can enable the generation of such alternate images, for example, in a "preflight" engine; they also can be generated by external applications away from the Prinect workflow. These alternative images in monitor resolution display on the screen instead of the high-resolution images when you open the documents in Acrobat. This speeds up opening of the documents. The high-resolution images are used for printing or for viewing the images scaled up.
Enable this option if you do not need these Acrobat previews and want to make sure that the edited PDF documents do not have such previews.
"Remove Thumbnails from PDF" option
PDF documents can have thumbnails for displaying the pages in the Prinect Cockpit. You can enable the generation of such page preview images, for example, in a "preflight" engine.
Enable this option if you do not need these thumbnails and want to make sure that the edited PDF documents do not have such images.
"Remove Prinect PDF Comments" option
PDF comments that were pasted automatically in the Prinect workflow are removed when you enable this option. You can set up the insertion of such comments, for example, in "Normalizing" of a "Qualify" sequence.
"Remove Invisible Objects" option
PDF documents can have objects that cannot be seen with the usual view options in Acrobat. Such objects are removed if this option is enabled.
"Remove Objects Outside of [selected box]" option
All the objects that are fully outside the frames selected in the list box are removed when you enable this option. For example, crop marks can be removed in this way.
"Clip Objects to [selected box]" option
When this option is checked, objects are trimmed so that you no longer see anything outside the selected box.
"Remove Third-Party PDF Comments" option
PDF comments that were inserted manually outside the Prinect workflow, for example, with Acrobat, are removed when you enable this option.
"Remove private data of other applications" option
PDF documents can contain private data that are entered to the PDF code by applications like InDesign. These data are used, for example, to tag objects so that they are detected as objects following a re-import of the PDF documents to InDesign.
Such private PDF data are removed if this option is enabled. This reduces the file size.
"Text" group
All text elements or all fonts in a PDF document are converted to vector graphic elements if you enable one of the options in this group. This requires that the fonts are embedded either in the PDF document or can be found in the font search folders.
Note: You cannot edit converted text elements. During proofing, the font appears bolder than in the original format.
When you enable one of the following font types, all the fonts of this type are converted. Other font types are not converted.
•Type1 (PostScript)
•TrueType
•OpenType
"Choke Graphics by... if neutral density is above..." option
This option is designed for cases where you want to print fonts converted to graphics on low-resolution printers. Because graphics are screened differently to fonts, these fonts are too "bold" when output. The PDF originals come with converted fonts that in most cases cannot be mapped to variants with embedded fonts.
In such cases, enabling the "Choke Graphics by..." option lets you print the fonts less bold. The rate can be set in the input box.
In the box "if neutral density is above", you can specify a threshold starting from which the line weight of the outline fonts will be reduced. See also Definition of the Neutral Density:.
"Turn Small Graphics into Bitmaps" option
If you enable this option, small graphics are converted to bitmaps.
This option is designed for cases where, for example, fonts converted to paths, like those created by ArtPro, are to be printed using inkjets. Such (vector) graphics, especially low-resolution ones, are often too bold when printed. When this option is enabled, these graphics are converted to bitmaps, preferably in the print resolution (e.g. 1200 dpi). This works around the effect of printing being too bold.
In the "Size Limit" box you can set the maximum size the graphics may have to be converted into bitmaps.
Conversion to bitmaps is advisable only for dark fonts on a light background. In the "if neutral density is above" box, you can specify a threshold for neutral density above which small graphics will be converted to bitmaps.
You should enter the resolution used in printing in the "Resolution" box.
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