No services or set up involved, works reliably and you can keep the PDF forever.
Here is a simple illustration of a copy & paste fail from this very page:
From html: a single sentence
> Since mozilla announced the sunsetting of pocket, I started looking for alternatives, including building a light version for my personal use. But nothing came out of my research.
From PDF: a newline split of a single sentence after light because PDF is generally too dumb to use sentences for text
> Since mozilla announced the sunsetting of pocket, I started looking for alternatives, including building a light > version for my personal use. But nothing came out of my research.
"volume needs to be the lowest possible. A minimisation problem needs two variables only and we have four in this case. However the volume and area formulas can be substituted into each other to give volume in terms of width."
Cut and pasted from three lines of a PDF I am authoring right now.
Literally a different use case. Do the steps from your actual workflow that I commented on instead of trying to find a variant where it works!
Maybe the app you use adds special PDF clutches to make a paragraph a paragraph.
> works reliably and you can keep the PDF forever
I have a ton of Apple devices and maybe my Reading List is just messed up, but it doesn't seem to keep an offline cache that is reliable in any way and would be hard to search or organize (unlike the PDFs)