PDF's generated by XeTeX and LuaTeX, font licensing

PDF's generated by XeTeX and LuaTeX, font licensing

[John Magolske]

Reading through the license of a commercial font I'm interested in,
I see it stipulated for PDF files created that:

    "... a reader or user cannot create new content using one of our
    fonts in a PDF application ... the complete font is not embedded"

And in an email correspondence with the vendor:

    "We just ask that you subset the font when exporting the PDFs ..."

Do PDF's generated by XeTeX and LuaTeX "subset the font" in this way?

Regards,

John

-- 
John Magolske
http://B79.net/contact
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Re: PDF's generated by XeTeX and LuaTeX, font licensing

[Taco Hoekwater]

On 08/17/2010 08:47 AM, John Magolske wrote:
> Reading through the license of a commercial font I'm interested in,
> I see it stipulated for PDF files created that:
>
>      "... a reader or user cannot create new content using one of our
>      fonts in a PDF application ... the complete font is not embedded"
>
> And in an email correspondence with the vendor:
>
>      "We just ask that you subset the font when exporting the PDFs ..."
>
> Do PDF's generated by XeTeX and LuaTeX "subset the font" in this way?

Yes, this is the default. So unless you have manually interfered, the
included fonts are always subsetted.

Best wishes,
Taco
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Re: PDF's generated by XeTeX and LuaTeX, font licensing

[Giulio Bertellini]

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What exactly does it mean to subset the fonts, when the fonts are included
in a PDF?

giulio

giulio bertellini

On Tue, Aug 17, 2010 at 8:47 AM, Taco Hoekwater <taco@elvenkind.com> wrote:

> On 08/17/2010 08:47 AM, John Magolske wrote:
>
>> Reading through the license of a commercial font I'm interested in,
>> I see it stipulated for PDF files created that:
>>
>>     "... a reader or user cannot create new content using one of our
>>     fonts in a PDF application ... the complete font is not embedded"
>>
>> And in an email correspondence with the vendor:
>>
>>     "We just ask that you subset the font when exporting the PDFs ..."
>>
>> Do PDF's generated by XeTeX and LuaTeX "subset the font" in this way?
>>
>
> Yes, this is the default. So unless you have manually interfered, the
> included fonts are always subsetted.
>
> Best wishes,
> Taco
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> http://www.ntg.nl/mailman/listinfo/ntg-context
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> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
>
> ___________________________________________________________________________________
>

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Re: PDF's generated by XeTeX and LuaTeX, font licensing

[Hongwen Qiu]

  于 2010年08月17日 15:30, Giulio Bertellini 写道:
> What exactly does it mean to subset the fonts, when the fonts are 
> included in a PDF?
Just included the used characters, not the whole font file.
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Re: PDF's generated by XeTeX and LuaTeX, font licensing

[Khaled Hosny]

On Tue, Aug 17, 2010 at 08:47:58AM +0200, Taco Hoekwater wrote:
> On 08/17/2010 08:47 AM, John Magolske wrote:
> >Reading through the license of a commercial font I'm interested in,
> >I see it stipulated for PDF files created that:
> >
> >     "... a reader or user cannot create new content using one of our
> >     fonts in a PDF application ... the complete font is not embedded"
> >
> >And in an email correspondence with the vendor:
> >
> >     "We just ask that you subset the font when exporting the PDFs ..."
> >
> >Do PDF's generated by XeTeX and LuaTeX "subset the font" in this way?
> 
> Yes, this is the default. So unless you have manually interfered, the
> included fonts are always subsetted.

I'm interested in the other way around, how can I tell luatex (or
context) to not subset the font, and I read that some recent version of
PDF specification allow embedding of unchanged opentype fonts (as
compared to converting them to type1 fonts), does luatex support (or
plan to support) that feature?

Regards,
 Khaled

-- 
 Khaled Hosny
 Arabic localiser and member of Arabeyes.org team
 Free font developer
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Re: PDF's generated by XeTeX and LuaTeX, font licensing

[Taco Hoekwater]

On 08/17/2010 03:05 PM, Khaled Hosny wrote:
>>>
>>> Do PDF's generated by XeTeX and LuaTeX "subset the font" in this way?
>>
>> Yes, this is the default. So unless you have manually interfered, the
>> included fonts are always subsetted.
>
> I'm interested in the other way around, how can I tell luatex (or
> context) to not subset the font,

   \enabledirectives[fonts.embedall]

> and I read that some recent version of
> PDF specification allow embedding of unchanged opentype fonts (as
> compared to converting them to type1 fonts), does luatex support (or
> plan to support) that feature?

In LuaTeX, we are not converting to Type1, OpenType fonts are always
embedded as CID Type0C, Truetype as CID TrueType. But some OT tables
are stripped for efficiency reasons (GSUB and GPOS, for example).

Best wishes,
Taco

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Re: PDF's generated by XeTeX and LuaTeX, font licensing

[Khaled Hosny]

On Tue, Aug 17, 2010 at 04:34:57PM +0200, Taco Hoekwater wrote:
> On 08/17/2010 03:05 PM, Khaled Hosny wrote:
> >>>
> >>>Do PDF's generated by XeTeX and LuaTeX "subset the font" in this way?
> >>
> >>Yes, this is the default. So unless you have manually interfered, the
> >>included fonts are always subsetted.
> >
> >I'm interested in the other way around, how can I tell luatex (or
> >context) to not subset the font,
> 
>   \enabledirectives[fonts.embedall]

Thanks.

> >and I read that some recent version of
> >PDF specification allow embedding of unchanged opentype fonts (as
> >compared to converting them to type1 fonts), does luatex support (or
> >plan to support) that feature?
> 
> In LuaTeX, we are not converting to Type1, OpenType fonts are always
> embedded as CID Type0C, Truetype as CID TrueType. But some OT tables
> are stripped for efficiency reasons (GSUB and GPOS, for example).

I can't tell a difference :) I'm just interested in being able to
extract the full font from PDF with all tables and stuff (they are my
fonts, so the legal side is sorted out), but I don't actually have a use
case for that :)

Regards,
 Khaled

-- 
 Khaled Hosny
 Arabic localiser and member of Arabeyes.org team
 Free font developer
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Re: PDF's generated by XeTeX and LuaTeX, font licensing

[Arthur Reutenauer]

> Just included the used characters, not the whole font file.

  Some of the other tables are also stripped down (not only the 'glyf'
table), so that the embedded font is not complete.  In fact, some
programs will refuse to open the font if we extract it from the PDF,
which is precisely the idea of a subsetted font (you can't use the PDF
to retrieve the font).

	Arthur
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Re: PDF's generated by XeTeX and LuaTeX, font licensing

[Hans Hagen]

On 17-8-2010 8:18, Arthur Reutenauer wrote:
>> Just included the used characters, not the whole font file.
>
>    Some of the other tables are also stripped down (not only the 'glyf'
> table), so that the embedded font is not complete.  In fact, some
> programs will refuse to open the font if we extract it from the PDF,
> which is precisely the idea of a subsetted font (you can't use the PDF
> to retrieve the font).

I wonder about these webfonts .. the whole model is based on good will 
and no abuse .. it's a comparable issue.

Hans

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