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Can you export jpeg at different dpi?

Jul 25, 2011, 14:57
Post: #1
Can you export jpeg at different dpi?
Is there a way to export a jpeg at a certain DPI?
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Jul 25, 2011, 15:37
Post: #2
RE: Can you export jpeg at different dpi?
That doesn't make sense... A JPEG has no inherent DPI. The only thing a JPEG has are dimensions in pixels. If you have a 1200*800 image and print it on 12x8" it will be 100DPI.

There is an indication of DPI on Gimp but this is only to provide indicative pixels<->inches conversions (indicative because you can change the DPI when you print).

So if you need an image at a given size for a given DPI setting, then you can compute how many pixels that makes (dimension x DPI) and scale the image to fit. But if you can scale down without losing too much quality, scaling up correctly will always be difficult, even of software is getting better at this.

Now answering your questions on
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