This is a read-only archive of the inkscapeforum.com site. You can search for info here or post new questions and comments at Hello,
Strange things happen when I try to save a png within a pdf. Here is my example : I first import the falcon.png image in inkscape then I save it as a pdf (dessin-1.pdf). Everything seems ok then I reopen it and save it a second time as a pdf (dessin-2.pdf). Now the image appears to be darker in a pdf viewer and if I rereopen it with inkscape no image appears !
Could anyone explain this to me ? Thank a lot for your help.
png and pdf
-
JackFoster
- Posts: 4
- Joined: Mon Nov 03, 2014 11:05 pm
png and pdf
- Attachments
-
- dessin-2.pdf
- (42.54 KiB) Downloaded 156 times
-
- dessin-1.pdf
- (46.61 KiB) Downloaded 168 times
-
- falcon.png (48.66 KiB) Viewed 1663 times
-
tylerdurden
- Posts: 2344
- Joined: Sun Apr 14, 2013 12:04 pm
- Location: Michigan, USA
Re: png and pdf
I suggest you use Inkscape to edit the document with SVG as working/construction format, and use PDF only for final distribution and printing.
Have a nice day.
I'm using Inkscape 0.92.2 (5c3e80d, 2017-08-06), 64 bit win8.1
The Inkscape manual has lots of helpful info! http://tavmjong.free.fr/INKSCAPE/MANUAL/html/
I'm using Inkscape 0.92.2 (5c3e80d, 2017-08-06), 64 bit win8.1
The Inkscape manual has lots of helpful info! http://tavmjong.free.fr/INKSCAPE/MANUAL/html/
Re: png and pdf
Hi.
It's caused by that your embedded raster image has some transparency in the alpha values.
By the first saving as pdf it is represented then as an opaque raster image masked with a greyscale raster image,
then the second save as cannot handle the masking right.
Not sure if that's the format's limitation, but in practice inkscape cannot save as pdf with non-plain white masks as far as I know.
On a side note, pdf-s always have an opaque white background,
so if this is all about that airplane, a solution would be to merge the raster image on a white layer in a raster editor program and use that opaque image instead.
It's caused by that your embedded raster image has some transparency in the alpha values.
By the first saving as pdf it is represented then as an opaque raster image masked with a greyscale raster image,
then the second save as cannot handle the masking right.
Not sure if that's the format's limitation, but in practice inkscape cannot save as pdf with non-plain white masks as far as I know.
On a side note, pdf-s always have an opaque white background,
so if this is all about that airplane, a solution would be to merge the raster image on a white layer in a raster editor program and use that opaque image instead.
-
JackFoster
- Posts: 4
- Joined: Mon Nov 03, 2014 11:05 pm
Re: png and pdf
Hello,
Thank for your answers. Since I use this image with a background, I need the transparency. So as tylerdurden suggested, I will use svg for my edits then save as a pdf.
Thank for your answers. Since I use this image with a background, I need the transparency. So as tylerdurden suggested, I will use svg for my edits then save as a pdf.
Re: png and pdf
Good luck with it!
A bit more notes for future reference.
In your image the reason for alpha values is not just the cropping, but the drop shadow -which, for the airplane's logic is unnecessary.
But even if it is needed for the look, it's not that necessary to have it merged straight in the raster image.
A more convenient solution from a pdf view would be to use a raster part with no transparency, clip it with a path, and maybe use the duplicant of that path for the drop shadow.
A bit more notes for future reference.
In your image the reason for alpha values is not just the cropping, but the drop shadow -which, for the airplane's logic is unnecessary.
But even if it is needed for the look, it's not that necessary to have it merged straight in the raster image.
A more convenient solution from a pdf view would be to use a raster part with no transparency, clip it with a path, and maybe use the duplicant of that path for the drop shadow.