China:
If the charts are still too big, then you need to resize the chart in
Qcharts first. Work out approximately how wide and deep you
want it to appear.
When you do the export in Qcharts it will export/replicate it in the
EXACT size that it appeared on your screen. So if the charts you
are posting are too big, it's because you must be looking at them
the full width of your monitor. I make mine about one quarter of
my monitor size, and those then fit reasonably neatly into the BB
postings.
I actually do File, New, Bar Chart and then resize it, and then
export it. And then I delete the new chart I created in Qcharts.
The percentage amount is just the resolution of the actual chart,
not its size.