I would like to bulk-convert a largish amount of horizontally-oriented Japanese text to vertically oriented.
I tried using this online converter
https://www.izuna.sylphid.jp/izuna_web.html
...but I can't figure out how to save/download the generated PDF. Is it possible? (Or is this just a free demo, so that, in order to be able to save/download the generated PDF, one first needs to pay for/buy something?)
I also tried this converter: http://hinata.la.coocan.jp/tool/tategaki.cgi , but it does not perform any column wrapping (so one ends up with columns of text that can be several screenfuls tall), and there is no simple way to save a PDF of the results.
Does anyone know of another way to perform this horizontal-to-vertical conversion in bulk?