Export Topic for Offline Reading

Hi,
Is there an option to save the topic as a single page for offline reading?
Using Firefox, had tried using Save Page as Web Page, HTML only, but Firefox can't open it after, it just displays a white page of some sort. The same Save Page as option work on the old site.
Choosing Web Page, complete works fine but it creates folders :frowning:
FYI, the Web Page, HTML file saved by Firefox is not readable even with Google Chrome or Microsoft Edge. So maybe it is a Firefox issue more than anything else?
Can save a text file but not easy to read :frowning: