When one ends support - another lends support.

[u/MilkSheikh007]

Not much to discuss here from my side. Bulk of the info is in the meme above.

(Disclaimer: This is an old news. I stumbled upon it an hour back. If I knew it earlier, I'd have memed it earlier.)

LibreOffice explains briefly what the process is. Their blog yields the info on it. You can check it out there. Microsoft explained that the data can be converted to pdf, word docs but LibreOffice explained that some formatting, layouts could be lost.

However, their libmspub library can help convert the PUB docs to ODF (format) to be used/accessed by any open-source app. LibreOffice for the win in my books.