While it’s not on by default, there’s a Safari preference you can enable to save offline automatically: Safari > Preferences, click Advanced, then select “Save

While it’s not on by default, there’s a Safari preference you can enable to save offline automatically: Safari > Preferences, click Advanced, then select “Save articles for offline reading automatically.” (Source: https://support.apple.com/guide/safari/keep-a-reading-list-sfri35905/mac https://support.apple.com/guide/safari/keep-a-reading-list-s...)