You can simply import relevant HTML documents to any OpenDocument based word processor like LibreOffice Writer and save them in a form of OTT document template.
Convert HyperText Markup Language web page to OpenOffice.org text document template.
We found 2 software records in the database related to .html to .ott file format conversion.
Multiplatform software - convert html to ott on any platform
Word processor and text editor from OpenOffice.org suite
Convert from html file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned html to ott. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Full-featured word processing and desktop publishing tool from LibreOffice suite