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Re: Font embedding in Existing PDF's

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In article <d9180159-1e0d-4e15-b78e-e3169759998en@googlegroups.com>, 
daffodils345@gmail.com says...

> The text and image contents of the files remain the same. The only 
operation perfomed is to embed the fonts completely.

I'm afraid that's what you *want* to happen, but it isn't what the 
pdfwrite device does. It creates a totally new PDF file, it does not 
simply embed fonts into the existing PDF file. At the PDF-syntax level 
the input and output files will be quite different.

As such there is a great deal going on behind the scenes and fonts are a 
a particular problem. It is likely that the reason for the change is 
that the simpler method used by the old version of Ghostscript was 
insufficient and led to incorrect PDF files being created from some 
kinds of input files.

Obviously we would fix that, we prefer that the result be correct to 
being small.


> My concern here ist how can I instruct ghostscript not to use the 
bigger Fonts or use the Resources from version 9.07?

As I said, I doubt that you can. The likelihood is that the fonts are 
being embedded differently to avoid a problem. You are (currently) 
fortunate that your usage does not expose the underlying problem in the 
output from the old version of Ghostscript.

However it is quite possible that at some point in the future you will 
encounter an input file which does not process correctly using the old 
scheme, in which case your output file would be incorrect.

That is, of course, a guess. As I have said, I cannot even begin to 
guess what changes over the last 7 years would have had this effect, 
there have been literally thousands of commits.

You could, of course, carry on using the old version of Ghostscript.

But if you open a bug report, attach an example file and give me a 
command line I will look at the problem. Note that if the example 
requires the use of non-standard fonts you will have to supply those as 
well, and the fontmap.GS file which maps them so that Ghostscript can 
use them.

Basically I need to be able to reproduce your problem on my system 
before I can investigate it.


			Ken

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Thread

Font embedding in Existing PDF's Rohan Suku <daffodils345@gmail.com> - 2021-02-02 02:55 -0800
  Re: Font embedding in Existing PDF's "Jeffrey H. Coffield" <jeffrey@digitalsynergyinc.com> - 2021-02-02 14:34 -0800
  Re: Font embedding in Existing PDF's ken <ken@spamcop.net> - 2021-02-03 07:55 +0000
    Re: Font embedding in Existing PDF's Rohan Suku <daffodils345@gmail.com> - 2021-02-03 06:34 -0800
      Re: Font embedding in Existing PDF's ken <ken@spamcop.net> - 2021-02-03 16:11 +0000
        Re: Font embedding in Existing PDF's Rohan Suku <daffodils345@gmail.com> - 2021-02-05 03:44 -0800
          Re: Font embedding in Existing PDF's ken <ken@spamcop.net> - 2021-02-05 11:47 +0000

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