Embedding drawings from Preview into PDF

These two programs will allow you to batch embed drawings directly into a PDF and rename the files quickly. Both can be run on large numbers of files.

Use VIPRiser to "print" a new PDF. Note you can batch print a number of PDFs all at once from the Finder. They can be saved in a folder (see vipriser preferences).

VipRiser changes the names (adds characters before and after the .pdf). Use NameChanger to remove the leading characters and the extra .pdf on the end. Again, you can do this to a large number of files at once.

So basically print to VipRiser which will create new PDF files.
Then rename the PDF files back to their original names.

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