Replace the text from pdf saving the structure of the document

[NikitaIVll]

I am attempting to use pypdf to translate PDF files while preserving the formatting and structure of the document. Could you please provide an example of how I can extract text and replace it with the translated text?

[pubpub-zz]

replacing text is very tricky : pdf is not a text but e-printed paper. The best that can be done would be to prepare pages using some other tools (ghostscript, print to pdf, fpdf2,...) and erase to original page content with remove_text() and remove_image() and/or with update_contents(None) then merge the new content in
It is not exactly what you may need but you should inspire from #2648