[luatex] Override image resolution?

Peter Rolf indiego at gmx.net
Sat Jun 18 12:49:50 CEST 2016

Hi Patrick,

Am 18.06.2016 um 12:13 schrieb Patrick Gundlach:
> Hi all,
> some images (jpg) have a broken resolution field. Now when loading the image in LuaTeX (0.79), I get strange results for img.width and img.height, probably because of the resolution.
> Is there a way to force a resolution (300x300 for example) when loading an image and ignore the setting in the file?
> I know of img.xsize and img.ysize, so that is not a real problem, but I am just asking.

I used \pdfimageresolution a few years ago. Should still be accessible
via \pdfvariable.

\pdfimageresolution 300

Best wishes,  Peter

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