Hi Andre,
You will have to use Print to File because floating text is a printing function, not an image function. But see below on haw to use Web/E-mail copies.
First to correct an misconception -
I don't want to use print to file because then there is a white border around the image and I want to be able to specify size in terms of pixels
You don't have to have a white border ad you can easily sort out a pixel size with PTF, it just requires a little arithmetic.
In PTF, enter a page size of the proportions (aspect ratio) of the final image required. Calculate the the PPI for that page size to give the image pixel size and when you pace the image in the queue, use Fit to Page with the Crop scissors on.
Once you have done this you have the option of saving either the Print set-up, Job or as Layout (without a real image, use the Template) for use as a Template later. A Template can hold text and Signatures and you will need a saved print set-up to go with it.
So, once you got the detail sorted and saved in the appropriate manner, Template etc., future jobs a re easy.
How do I do all this in Qimage Studio? I suppose you're going to tell me I need to make a copyright/signature image first for the transparency issue.
Yes, that is the case for printing.
However ...
To use web/e-mail copies with text and or a Copyright logo, you can use the image editor (Filter) with a Cutout. There is a sample supplied with Qimage and again check the Help on how to achieve transparency. You will have to create a Cutout image in an external editor, but once done can be used over & over again.
I think this latter method will be better for you.
Terry