Since you likely want to see the layout and text, using a cloud-based converter is the most direct path:
InDesign CS6 or earlier can open PageMaker files. There is a software called 'File Magic' that purports to open PageMaker files. Create PDF from PMD online - DocHub open pagemaker file online
Unlike PDFs or JPGs, there is no mainstream "Google Docs for PageMaker." Because the format is proprietary and obsolete, no major web-based viewer supports direct rendering of PageMaker’s native layout, fonts, and layers perfectly. Since you likely want to see the layout
To open a PageMaker file online, you have a few options since Adobe PageMaker is a legacy software that was discontinued in 2006. Here are some methods: To open a PageMaker file online, you have
Warning: Complex layouts with overlapping text boxes usually get scrambled during online conversion. Use this for essays, manuals, or data-heavy files, not for art prints.
If "online" isn't a strict requirement, download (free and open source). Its "Draw" component can open older PageMaker files. It’s not perfect—you may lose master pages and advanced typography—but it’s the best free desktop alternative and doesn't require the internet once installed.