03-24-2022, 04:31 PM
Quote:...I managed to crop the handprints without changing their size, and set alpha then exported to PNG which took me an age to figure out! but when I open the image it has a big white background the size of A4....
Gimp is a raster (bitmap) editor that works in pixels. You do not say how you got the image but even a mobile phone has a large pixel size these days.
For LibreOffice you can scale the image Image -> Scale Image down to a smaller size. However LibreOffice (LO) will use a setting "Print Resolution" when it imports an image. I recommend using that. Set a size in Image -> Print Size The image is not scaled in any way, just the way it is displayed in LO. It is still possible to re-size in LO using the image settings.
Your background removal sounds a bit dubious
but not easy to comment without the actual image.Those hints here in a video, duration 4 and a half minutes. https://youtu.be/kWOb5uKXJTk