In Gimp there is a facility for reducing an image's size and increasing the dpi in proportion. In Inkscape is there a way to shrink an image and as a result increase the dpi?
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There is no dpi in inkscape, as pictures are made of lines and shapes rather then pixels, but you can set the dpi when exporting to a png.
- -- Yannik Völker
On Tue, 21 May 2013 17:30:47 +0200 Yannik Völker <yannikv@...266...> wrote:
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There is no dpi in inkscape, as pictures are made of lines and shapes rather then pixels, but you can set the dpi when exporting to a png.
Yannik Völker
OK. but when a png or jpg image is imported it has a certain dpi. It is not AFAIK automatically converted to vector format. So if subsequently I shrink it does the DPI increase proportionately? Or does it always stay at 90dpi?
On Tue, 2013-05-21 at 11:39 -0400, john Culleton wrote:
OK. but when a png or jpg image is imported it has a certain dpi. It is not AFAIK automatically converted to vector format. So if subsequently I shrink it does the DPI increase proportionately? Or does it always stay at 90dpi?
The image is always sampled for png export to the correct dpi I believe, but for pdf, you get to choose the pdi on images and renders.
Martin,
[Edit: this question has pretty much been answered but I figured I would share the answer I drafted yesterday anyway.] It might be easier to think about it in terms of image quality since DPI is mostly applicable to print (the 'D' being dots of ink); to answer your question, Inkscape will not discard picture information (essentially number of pixels) unless you tell it to (although it should be noted it renders PNGs somewhat poorly live, it does it better when you go to rasterize when you export [if you do, rather than just saving as a vector format with PNG embedded as Base64]). If you resize it, there will still be the same number of pixels; therefore the DPI will increase as the total absolute image area decreases (in a parabolic manner, because DPI is a square measure (dots per *square* inch). I think there was another point I was going to make but I forgot what it was. -Arlo James Barnes
participants (4)
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Arlo Barnes -
john Culleton -
Martin Owens -
Yannik Völker