Re: Huge Filesize of PS file 12M

[Wim Stockman]

Hello John,
Hello Werner,
Hello Everybody,
Thanks John for your github link it inspired me to write some small scripts
to automate your encoding solution.
Also I noticed that Grops output for line drawing is very intense for the
DL command only draws lines of 10 units and grops then spits out a massive
amount of DL command if you draw a line from one side to the other side of
your page. So I also made a script to do this in 1 DL command.
You can find my solution here
https://github.com/wimstockman/GropsPostProcess
Have a nice evening everybody.
Keep up the good work

Kind regards
Wim Stockman


Op za 23 jan. 2021 om 01:38 schreef John Gardner <gardnerjohng@gmail.com>:

> Because I still see a lot of this [in the Postscript file]. Can I somehow
>> remove them. I don't need all those special characters.
>
>
> In PostScript, you can "initialise" an array with a value with
>
> /Encoding [
>     255 {/.notdef} repeat
> ] def
>
> % Set array entries individually
> Encoding 0  /asciicircum put
> Encoding 34 /quotedbl    put
>
> % Print contents of array to stdout for inspection
> Encoding ==
>
>
> Compressed, that becomes:
>
> /E[255{/.notdef}repeat]def E 0/asciicircum put E 34/quotedbl put
>
>
> I use an enhanced alternative
> <https://github.com/Alhadis/Stupid-Post-Tricks/blob/09a98036abba913c0766e60d1bac2008e7d71c5c/inspect.ps>
> to PostScript's built-in `==` operator, which is imported with:
>
> %!PS
> (/path/to/inspect.ps) run
>
> % Usage:
>
> << /foo (Bar) /baz (Qux) >> ===
>
> (Check gs(1) for details on the library search-path and invocation
> syntax).
>
> Cheers,
> — John (@Alhadis <https://github.com/Alhadis>)
>
>
>
> On Sat, 23 Jan 2021 at 10:08, Wim Stockman <wim.stockman@gmail.com> wrote:
>
>> Hi, Thank you Werner for your great input.
>> So I'll leave the embedded fonts out and take it a step further.
>> I'm thinking of going old school. I generate once a nice stationary
>> letterhead with groff.
>> and for the letters themselves I start them at the right vertical
>> position..
>> I looked it up with the \n[ln] register. So I know where to start. And if
>> they need printing or mailing.
>> I create a small script two stamp the letter on to the stationary.
>> I tried this out and worked like a charm.
>>
>> I even added gzip to reduce the postscript files which slashed the file
>> size even more by 50%
>> So now I have a one time stationary letter file of 88KB which contains two
>> company logos. and an average letter that is around 10KB
>> When I gzip them I have the header of 40KB and the average letter is less
>> than 3KB.
>> This is quite a victory coming from 12MB a file.
>> Thank you ,
>> Kind regards
>> Wim Stockman
>>
>> Op do 21 jan. 2021 om 11:12 schreef Werner LEMBERG <wl@gnu.org>:
>>
>> >
>> > > So thank you for the tip. I disabled the fonts in the /devps/download
>> > file
>> > > and it went from 12MB to 92K so that is already a big step forward.
>> > > Is there a better way to disable the embedding of fonts ?
>> >
>> > Not that I'm aware of.
>> >
>> > > Because I still see a lot of this :
>> > > "
>> > > grops begin/DEFS 1 dict def DEFS begin/u{.001 mul}bind def end/RES 72
>> > > def/PL 841.89 def/LS false def/ENC0[/asciicircum/asciitilde/Scaron
>> > > /Zcaron/scaron/zcaron/Ydieresis/trademark/quotesingle/Euro/.notdef
>> > >
>> /.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef
>> > >
>> /.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef
>> > >
>> /.notdef/.notdef/.notdef/space/exclam/quotedbl/numbersign/dollar/percent
>> > > /ampersand/quoteright/parenleft/parenright/asterisk/plus/comma/hyphen
>> > > "
>> > > in the Postscript file.  Can I somehow remove them. I don't need all
>> > > those special characters.
>> >
>> > No, you can't.  Those arrays are encoding vectors necessary to access
>> > those fonts in general, regardless whether they are embedded or not.
>> >
>> > As I told you in the previous e-mail: You need to postprocess groff's
>> > PS output to get something smaller since font subsetting is not
>> > implemented.
>> >
>> >
>> >     Werner
>> >
>>
>