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I print code from time to time, when I have to modify an existing project I never read before. Perhaps 5 or 10 pages only. I like to make annotations with a pen, or cross irrelevant parts.

I usually use an editor to try to make sensible page jumps first, and in an extreme case I used adhesive paper tape to make a looooong page and then help to refactor the code.

There are some pdf libraries that can format inputs into pages with margins defined in some config file. But I had to ask Claude to make a script as there are so many parameters…

Tcpdf or mpdf for PHP… fpdf or weasyprint for python.

Something to improve, I use gotenberg, and it doesn't do it by default, need to somehow cut it nicely.