Open WP and Wri files

If you are on Catalina or later, install the free LibreOffice 7.6.* Suite. It can open Word Perfect and Microsoft Write documents, but is not an editor for them, and you can resave these as current Word .docx documents.

LibreOffice offers an Intel and Apple Silicon version of the suite and the latter may interest you with that 15-in Air.

Bomiboll wrote:

Libre Office did the job.

Are there other apps can open WP and Wri ?

LibreOffice was purposely designed to open these files and many others. Whether Apache's OpenOffice suite can do the same is unknown as I haven't used OpenOffice in over a decade, because LibreOffice is the more robustly supported product. Otherwise, I am unaware of anything else unless you find something in the Mac App Store.

When you first launch LibreOffice, choose Open File. On that resulting dialog, click the Options button. Click and hold the File Types: All Files selector to see a very long list of the types of files it can open.

The batch conversion of HTML files to PDF is a tricky solution and I don't think you will find free tools to do that with satisfactory results. I have tried pandoc using TexLive 2023 and wkhtmltopdf PDF engines with lackluster PDFs. The best results would be with a browser saving the opened HTML to PDF, and that is interactive, not batch.