Re: gropdf, Ghostscript, and file sizes

[Oliver Corff]

Hi,

probably the massive difference in size is due to embedding the whole
font in the PDF document, I assume.

Best, Oliver.


On 22/04/2024 16:56, Jan Eden wrote:
> Hi,
>
> I learned that gropdf in general tends to create larger files than a
> combination of groff and Ghostscript (ps2pdf):
>
> groff -Tps test.tr | ps2pdf - test.pdf → 18K
> groff -t -Tpdf test.tr > test.pdf → 313K
>
> This holds true even when pdf is specified as groff's output device and
> the output is then piped to ps2pdf:
>
> groff -Tpdf test.tr | ps2pdf - test.pdf → 19K
>
> The results above are based on a single-page file set in an Open Type
> font I added to groff.
>
> But today I came across an interesting effect with the standard fonts
> (results for H, similar for T etc):
>
> groff -Tps test.tr | ps2pdf - test.pdf → 13K
> groff -t -Tpdf test.tr > test.pdf → 12K
> groff -Tpdf test.tr | ps2pdf - test.pdf → 2.6M
>
> Why is gropdf more efficient than groff+Ghostscript with the standard
> fonts – and why does groff create such gargantuan files for the PDF
> output device when coupled with ps2pdf?
>
> - Jan

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Dr. Oliver Corff
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