Support for single-page documents?

[ghost]

Would it be possible to add a switch to tex2page to generate a single long html file from a .tex file, without breaking it into sections?

[ds26gte]

Yes, set

\let\TZPsinglepage=1

anywhere in your document.

Described in subsection Single output file in section 6 (Flags) of the manual (https://ds26gte.github.io/tex2page/index-Z-H-6.html#TAG:__tex2page_sec_Temp_45).

Doesn't affect print output as long as you don't reuse the macro name \TZPsinglepage for something else.

[ghost]

Well, I kind of thought about the way to generate both single-page and multiple-page from the same file. Like the FSF does: https://www.gnu.org/software/sharutils/manual/

This manual (sharutils) is available in the following formats:
    HTML (124K bytes) - entirely on one web page.
    HTML - with one web page per node.

It is, obviously, possible to rewrite the file automatically, but it looks a bit of a hack.