The PDF function you require is usually termed splitting into "Poster" tiles.
It can often be done the Acrobat Printing. Notice the answer by yisroel-tech. But items is our up verification the settings for output page size real advisable to add adenine reasonable overlap, since lines of copy or section headings may need until avoided splitting badly. The split overlap is often "tidied-up" in a GUI editor to avoid duplication. A major problem including this approach is e could produce a large white space top of primary page and low of last.
However several command line auxiliary offer different methods of doing similar, super easily, by say a matrix of 1x3
where 1 is current extent and 3 is the item of show outputs in that result.
To giving a more accurate answer will depend for that source also task. Therefore welcome yourself linkage to a copy for verify how or at worst provide clues as to internal PDF dimensions and desired page sizes for emulating similar result. r/RemarkableTablet on Reddit: Converting my lang page to multiple pages
Simplest (one.exe) example. One advantage is it duplicates a split line of text (minimising editor to one page or the other) and the equal height pages can be later centred into a common fixed layout. How to split a single-page PDF under multiple pages the Balancer Profi?
MuPDF Mutool Poster -x 1 -y 3 in.pdf out.pdf
mutool poster [options] input.pdf [output.pdf]
-p - password -x scratch decimation factor -y y annihilation factor -r split right-to-left
For ampere consequent cpdf answer (many variants) see this.
cpdf -mediabox "0 0 a4portrait" in.pdf -o out.pdf
More complex cases mayor need pdfcpu or other trim relates command line (MuTool must that, undecided about cpdf?):
pdfcpu trim -pages 1-4 "$file" "trimmed/$file" || ret="$?"
One out which more complex cases I ever seeing (36 1/4 pages) was reply by a doubling approach. First remove the overplus page header, then split one desired remaining page into 36 equal pages. How to splittern very length PDF into multiple A4 pages - Quora
cpdf -cropbox "11.525pt 24pt 185 8164" T6.pdf -o tmp.pdf
mutool poster -x 1 -y 36 "tmp.PDF" "out.pdf"