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Could I get a fixed width when the image is exported as .png file with the ExportImage command, controlling the DPI? (I want outputs with less kB).
ExportImage("type", "png", "filename", "geogebra.png", "width", pxWidth, "dpi", DPI)
If I fix the width and change the DPI, the filesize doesn't change. And if I remove the width parameter, the kB decreases, but the width too.
Files:
image-width.ggb
The same question 
DPI is just a flag in the PNG - it doesn't change the filesize
To get a smaller size you need to decrease the pixels
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