Tim Murray2 wrote:
Thanks, but I guess I was not clear about wanting the document to "resize." Word, Pages, and PDF docs will maintain their aspect and margins. I want it to adjust like an eBook. Think Kindle.
Microsoft Word and Apple Pages are word-processing editors with some page layout capabilities, and support various document formats.
PDF is one of various document formats and is specifically intended for printing, and printing inherently does not support text reflow.
EPUB does support text reflow.
Have you generated an EPUB output file using Pages, Word, Affinity, Scrivener, LibreOffice, or other tools, and tested it for your page-reflow requirements, and for whichever unstated app you are using for display here?
Some background material on four of the tools mentioned:
Apple retired their iBook Author app a while back, though it probably still works for those that previously acquired it, and still with access to its prerequisites. And Apple had previously offered their own iBook format with IBA-named files, which was based on EPUB with Apple-proprietary extensions. I don’t know if any current tools support generating new iBook IBA format files.
Transition from iBooks Author to Pages - Apple Support
As for PDFs and such, those are pre-print formats and do not reflow. EPUB will reflow text. Try it.
PS: If you’re solely looking to transfer a file and not reflow text, there are various means to do that, including direct links to iCloud Drive files:
Share files and folders in iCloud Drive on iCloud.com - Apple Support