It's really easy, despite what you'll think trying to sort the thread out. Just get imgkap and your chart and the batscript in a work folder, double click the batscript that extracts, fiddle with the image it produces, doubleclick the rebuilding script and yer done.
There's other ways as well but this is what I do. Takes a second or two not counting the work editing your image- the hard part...irfanview or xnview portable versions would be my choices for the least confusing, no bloatattack image editors... that can open what may be very large images on older machines
but for something complicated, transparency and all, use what ever you like just be careful to keep your app under control and end up with an image similar to the one you started withEXACTLY the same in size, colour depth
(if Possible) and format if possible tif or png. Not lossy ones like jpegs.
What's a batscript?well just copy the stuff to TWO notepad files and rename em to ".bat" from ".txt" ie:split.bat and rebuild
Doubleclick the "split.bat"
and in Windows, it should pop up a command window and do things all by itself...the right things, that is. The original kap stays the same. no harm done.
you can change the tif to png if you like (or even bmp, I think but I don't)
link to the scripts to copy..
Imgkap - kap File Converter Tool
you see Dacust's post above? he has" imgkap" to download
imgkap - Download
caveat. to use the windows .bat script I cobbled together, change imgkap's name to get rid of the 0's and 1's and all. just "imgkap.exe" is what I do, because the extra numbers are a pest. You will see the version in the cmd wind