Improving the quality of graphics in PDF files
Version: 5.x - Scientific WorkPlace & Scientific Word
Creating PDF files from the Typeset menu can yield files containing poor-quality graphics.
PdfLaTeX supports only a few types of graphics: .png, .jpg, and .pdf. When you create a PDF file from your document, any graphics in other formats are converted to .png, .jpg, or .pdf format for inclusion in the final PDF file. The settings you make in the PDF Graphics Export Options dialog determine which format is used. Generally, the .png and .jpg graphics created for PDF files are of good quality, but .pdf graphics, which are created by a third-party conversion filter, may be problematic.
Solution 1: Use the latest build
The most recent program builds solve most of the graphic conversion problems. However, if you still see problems after installing the latest build, the instructions in Solution 2 and/or Solution 3 below may help.
Solution 2: Changing the PDF graphics export format
Using a raster export format for raster graphics can improve the quality of the final graphics.
Solution 3: Changing the value in the registry subkey
This strategy applies only to converting graphics to .pdf format.
The filter behaves differently depending on whether pdfLaTeX the internal Windows graphics format directly or uses a temporary file for the conversion.
In Version 5, the conversion method and thus the behavior of the graphics filter depends on a setting in the UserGraphicsExport registry key. Inside each key is a subkey whose value determines the conversion method:
You can change the value of the registry subkey.
NoteDirectly changing the registry is recommended only for advanced users. Incorrect modifications of the registry can result in a system that will not start.
Remember that this change affects only those graphics exported as .pdf files. It has no effect on graphics exported as .jpg or .png files.
You may find that changing the setting for GfxPDFExportFromFile does not show an improvement. Graphics conversions can be affected by the particular graphics in your document and by the version of Windows you are using. In particular, conversion results may differ between Windows XP/2000/NT and Windows Me/98. You may also notice problems with colors or incomplete conversion.
Last revised 05/12/06
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