72dpi is the default for screens.

If you have:

• used the Canvas inspector to set Canvas > Size > Ruler Units to pixels,
• used the Properties > Geometry inspector to give the shape a height and width of 100px each,

You should get a pixel-proportionate export using the settings shown here:



Note that current selection export frames the shape with a bit of margin even if you uncheck 'include margin', but you can shave this down by giving a negative margin value.

I am getting a closely cropped 101 pixels square PNG from the above from an OG circle sized at 100px height and width - about right because its stroke is not zero width ...

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