Unless you make your Inkscape SVG such that the pixel grid of input (the JPEG) and output (the PNG) perfectly align when exporting, you will have aliasing problems due to mismatching pixels, explaining your loss of quality. As vector formats can embed pixel graphics such as your JPEGs, they pose no problem. Whatever you edited in is vector graphics and using a vector format is best for this. If it was text you added, you may consider the option Omit text in PDF and create LaTeX file to have LaTeX render your text (which has advantages such as matching fonts, font sizes, etc.). Only more complex artwork might cause issues when saved as SVG from Inkscape and then opened in Illustrator. Simple graphics like this can be saved as SVG and then opened in Illustrator. For other modifications of a photograph, a pixel editor (such as GIMP) is more suited.Īssuming that JPEGs and Inkscape are a good choice, use a vector format such as EPS or PDF (instead of PNG). When exported as an EPS you get this: Which is basically a raster image You see, EPS is a dinosaur. I show how to overcome the idiosyncrasies, and I give a quick tour of. However, if you want to modify a plot, export it in a vector format (PDF, EPS, or SVG) to begin with. I cover how to export figures from Inkscape to LaTeX with the text in a separate file. For example if you want to add labels to a photograph, JPEG is a good format for the photograph (as it is inherently pixelated) and Inkscape is a good tool for adding labels. First of all, be sure that JPEGs and Inkscape are the right choices for what you want to do.
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