Most documents are photographed now, not scanned, and most places that receive them want one PDF rather than nine pictures.
Make a PDF from photos →Free every day without an account on some tools. Your file is deleted the moment the job finishes.
Each picture gets its own page, sized to fit the paper without stretching. HEIC from an iPhone and WebP from a website are converted for you, so a photo taken on any phone works without being exported first.
No. Each picture keeps its shape and is placed on a page rather than stretched to fill one.
Yes — A4 or letter for printing, or a page cut to the picture for viewing.
As many as fit in 100 MB, in the order you choose.