3:17 a.m.
I notice that while Inkscape offers a "save to .pdf" option, there's no
way to specify dpi. I'd like to be able to have 300dpi .pdf images.
What workarounds are available?
--
Kat Tanaka Okopnik
Linux Gazette Mailbag Editor
kat@...2161...
6:35 a.m.
Kat Tanaka Okopnik escribió:
I notice that while Inkscape offers a "save to .pdf"
option, there's no
way to specify dpi. I'd like to be able to have 300dpi .pdf images.
What workarounds are available?
Only one I've been able to do is to first export to .png and then insert
that into an OpenOffice.org's Impress document, export from the file
menu to PDF and be able to change there the image's DPI and compression
method.
7:26 a.m.
On 2007-May-20 , at 08:35 , Gian Paolo Mureddu wrote:
Kat Tanaka Okopnik escribió:
> I notice that while Inkscape offers a "save to .pdf" option,
> there's no
> way to specify dpi. I'd like to be able to have 300dpi .pdf images.
>
> What workarounds are available?
>
>
Only one I've been able to do is to first export to .png and then
insert
that into an OpenOffice.org's Impress document, export from the file
menu to PDF and be able to change there the image's DPI and
compression
method.
If I understand you well this means that you export the whole
Inkscape document to PNG and then transform it to PDF with OpenOffice
Impress (you could do the same with the Gimp or ImageMagick's convert
actually). If this is what you do, you could keep it in PNG instead
of turning it to a PDF, it won't change a thing.
PDF is a vector based format and PNG is a raster format:
http://en.wikipedia.org/wiki/Vector_Graphics
http://en.wikipedia.org/wiki/Raster_Graphics
The advantage of exporting to PDF from Inkscape's SVG (which is also
a vector format) is that you keep the vector information (i.e. when
you zoom in, the lines stay sharp). If you export the SVG to a raster
format (PNG here), no matter in which format you convert the PNG
afterwards, you won't get the vector information back, you will still
end up with just a bunch of pixels.
In fact, the raster/vector difference is complicated by the fact that
you can include some raster images in a vector based format. For
example you can include some raster images in an Inkscape document.
And what you do in your PDF conversion is exactly that also: you just
include a raster image (a bunch of pixels) in a vector document (the
PDF), but that does not turn it into vector in any way.
I hope this helps. Maybe the FAQ in Inkscape's wiki need to be
expanded a bit about this:
http://wiki.inkscape.org/wiki/index.php/FAQ#What_is_vector_graphics.3F
Cheers,
JiHO
---
http://jo.irisson.free.fr/
1:57 a.m.
jiho escribió:
If I understand you well this means that you export the whole
Inkscape document to PNG and then transform it to PDF with OpenOffice
Impress (you could do the same with the Gimp or ImageMagick's convert
actually). If this is what you do, you could keep it in PNG instead
of turning it to a PDF, it won't change a thing.
PDF is a vector based format and PNG is a raster format:
http://en.wikipedia.org/wiki/Vector_Graphics
http://en.wikipedia.org/wiki/Raster_Graphics
The advantage of exporting to PDF from Inkscape's SVG (which is also
a vector format) is that you keep the vector information (i.e. when
you zoom in, the lines stay sharp). If you export the SVG to a raster
format (PNG here), no matter in which format you convert the PNG
afterwards, you won't get the vector information back, you will still
end up with just a bunch of pixels.
In fact, the raster/vector difference is complicated by the fact that
you can include some raster images in a vector based format. For
example you can include some raster images in an Inkscape document.
And what you do in your PDF conversion is exactly that also: you just
include a raster image (a bunch of pixels) in a vector document (the
PDF), but that does not turn it into vector in any way.
I hope this helps. Maybe the FAQ in Inkscape's wiki need to be
expanded a bit about this:
http://wiki.inkscape.org/wiki/index.php/FAQ#What_is_vector_graphics.3F
Cheers,
JiHO
Yes, well not exactly... I'm conscious of the differences of Raster and
Vector graphics. I only export those elements I want to fine tune. If
anyone uses Linux, then using Scribus is another possibility, which
means a better PDF exporter than that of Inkscape's native one, which
then means no need for GIMP, and direct manipulation of the SVG within
Scribus itself, as it supports the format (I ignore if inkscape
specifics are lost, like blur effects and the like) when manipulating
directly the SVG within scribus. Another way to do this, is to export
image portions to a separate raster format
in a higher DPI modify as needed in GIMP, then export or save-as another
SVG the text elements, and compose the final document in Scribus (much
better way than using OO.o as intermediary) then fine-tune the PDF
options within Scribus. I did not mention this earlier, as I did not
know if the OP used Windows or Linux, as Scribus is only available
(AFAIK) to Linux and POSIX Unices.
2:13 a.m.
On Sun, May 20, 2007 at 08:57:49PM -0500, Gian Paolo Mureddu wrote:
Yes, well not exactly... I'm conscious of the differences of Raster and
Vector graphics. I only export those elements I want to fine tune. If
anyone uses Linux, then using Scribus is another possibility, which means
a better PDF exporter than that of Inkscape's native one, which then means
no need for GIMP, and direct manipulation of the SVG within Scribus
itself, as it supports the format (I ignore if inkscape specifics are
lost, like blur effects and the like) when manipulating directly the SVG
within scribus. Another way to do this, is to export image portions to a
separate raster format
in a higher DPI modify as needed in GIMP,
If I understand this correctly, for my purposes, saving to something
like .png and converting, or saving to .eps, are better options...
Yes?
then export or save-as another
SVG the text elements, and compose the final document in Scribus (much
better way than using OO.o as intermediary) then fine-tune the PDF options
within Scribus. I did not mention this earlier, as I did not know if the
OP used Windows or Linux, as Scribus is only available (AFAIK) to Linux
and POSIX Unices.
Scribus is actually available for Linux, Mac (OSX) and Wind0ws.
--
Kat Tanaka Okopnik
Linux Gazette Mailbag Editor
kat@...2161...
6:18 a.m.
On 2007-May-21 , at 04:13 , Kat Tanaka Okopnik wrote:
On Sun, May 20, 2007 at 08:57:49PM -0500, Gian Paolo Mureddu wrote:
> Yes, well not exactly... I'm conscious of the differences of
> Raster and
> Vector graphics. I only export those elements I want to fine
> tune. If
> anyone uses Linux, then using Scribus is another possibility,
> which means
> a better PDF exporter than that of Inkscape's native one, which
> then means
> no need for GIMP, and direct manipulation of the SVG within
> Scribus
> itself, as it supports the format (I ignore if inkscape
> specifics are
> lost, like blur effects and the like) when manipulating
> directly the SVG
> within scribus. Another way to do this, is to export image
> portions to a
> separate raster format
> in a higher DPI modify as needed in GIMP,
If I understand this correctly, for my purposes, saving to something
like .png and converting, or saving to .eps, are better options...
Yes?
No ;). If you want PDFs which are real PDFs (i.e. with the elements
you draw in Inkscape that stay vectors) with included images at
300dpi you should follow the advice of Horvath Andras in an earlier
email: tweak your raster images *before* importing them in Inkscape
so that they have their final size and a 300dpi resolution, import
them in your Inkscape document, scale them to their correct size
(when Inkscape imports images, it scales them so that they have 90dpi
resolution, so you 300 dpi images will appear very large and you have
to scale them down to their real size to have them at 300dpi), draw
whatever you want to draw, and then export the whole drawing to PDF
directly in Inkscape.
Just to be sure that this is what you need, what do you want to use
these PDFs for?
[...]
Cheers,
JiHO
---
http://jo.irisson.free.fr/
10:58 a.m.
On Mon, May 21, 2007 at 08:18:08AM +0200, jiho wrote:
On 2007-May-21 , at 04:13 , Kat Tanaka Okopnik wrote:
> If I understand this correctly, for my purposes, saving to something
> like .png and converting, or saving to .eps, are better options...
>
> Yes?
No ;). If you want PDFs which are real PDFs (i.e. with the elements
you draw in Inkscape that stay vectors) with included images at
300dpi you should follow the advice of Horvath Andras in an earlier
email: tweak your raster images *before* importing them in Inkscape
so that they have their final size and a 300dpi resolution, import
them in your Inkscape document, scale them to their correct size
(when Inkscape imports images, it scales them so that they have 90dpi
resolution, so you 300 dpi images will appear very large and you have
to scale them down to their real size to have them at 300dpi), draw
whatever you want to draw, and then export the whole drawing to PDF
directly in Inkscape.
I just created a test document with only text, and saved it to
"CairoPDF" (I'm running Inkscape 0.45+devel, built May 18 2007). When I
view the resulting .pdf file using Xpdf, the letters with no curves
appear fine, but the curves are all badly aliased - no matter what
magnification I view it at.
What am I missing here?
Just to be sure that this is what you need, what do you want to use
these PDFs for?
Occasionally I have clients who need last-minute printing (i.e. finished
at 3am, printed by morning) and thus those files end up going to
Kinko's. Unfortunately, Kinko's prefers to have images prepped as .pdf,
and thus the necessity of a 300dpi file...
--
Kat Tanaka Okopnik
Linux Gazette Mailbag Editor
kat@...2161...
7:08 a.m.
Kat Tanaka Okopnik wrote:
I notice that while Inkscape offers a "save to .pdf"
option, there's no
way to specify dpi. I'd like to be able to have 300dpi .pdf images.
What workarounds are available?
Inskcape save the images in the pdf with their original resolution. It
doesn't downsample them. So the solution is to convert the images to 300
dpi before you save the pdf from Inkscape.
I'd suggest you to do this with Gimp giving it the image's final size
and 300 dpi.
Andras
6042
days inactive
6043
days old
inkscape-user@lists.inkscape.org
7 comments
4 participants
participants (4)
-
Gian Paolo Mureddu -
Horvath Andras -
jiho -
Kat Tanaka Okopnik