I'm trying to create a PNG file that is 5000 x 5000 and 300 DPI?

Is it possible?

Any workaround?

Hi Braznyc,

you can enter the pixel-size of the exported image in the dialog for exporting png images.
The 'resolution' displayed in the export dialog for a png image cannot be set independently from the pixel size in Inkscape.
This value is not saved as a property of the exported png image (I think that value defaults to 90dpi...?).

In reality, resolution is a function of the size in that you will print the image. Print a 5000x5000 image to a size of 16.666 inch to get a resolution of 300dpi. If you make your Inkscape document size 16.6666 inches wide and high, the value displayed in the export dialog will be approximately 300dpi.

The resolution value saved in the png file is just a hint for the next program that uses it for printing. It can be overridden by setting the print size manually in every case. It can also be set directly using a raster graphics editor, e.g. the Gimp (http://gimp.org) - but I'm not sure why that would be necessary.

Thanks.

Is there another vector program that can import the svg file (90dpi) created in Inkscape and save it as a 300 dpi png?

SVG is a (basically) resolution-independent format. Only if you have raster images embedded in your drawing, dpi becomes /kind of/ relevant, because you don't want to print them blocky / pixelized.

I'm still not really sure I understand where the problem is exactly.
It would be helpful if you could give us more info about what you're actually trying to achieve and what your goal is, and what kind of data (vector? raster?) your file contains.
What do you need the 300 dpi png image for? How will it be used? Why does the embedded resolution value play any role at all?

The problem is simple: I just wanted a 5000 x 5000 at 300 dpi PNG.

I can do that same thing on Gimp. I just don't understand why I can't export a svg file as a 300 dpi PNG.

Why a vector image that is made of equations instead of pixels needs to have a resolution of 90 dpi btw?

I've just re-checked the issue with my current Inkscape version.

It actually *does* set the correct resolution for me (used imagemagick's 'identify' command for this). I seem to remember this wasn't the case in previous Inkscape versions... (current is 0.91)

Output of an export at 600 dpi, A4, looks like this:


(multiply by 2.54 to get ppi)

The dpi value of a png image, if used for screen, is mostly irrelevant. If used for print, you will probably embed it into a DTP program like Scribus, where you can set the size of the image as you like. It might be useful if you import images into OfficeSuites or similar programs, so you do not need to resize the image there... but I still don't know why you need that exact value...

Inkscape needs a dpi value for embedding raster images (and I think for some patterns and filters, too, I'm not so sure about that, though).

@~suv: thanks!