Once you visit the download page using Safari, Windows will allow you to directly download the Windows version you want. If you do not want the media creation tool and just want to download the ISO file, you will need to switch to a browser that is non-Windows (for example, Safari). Once installed, you may need to accept license terms depending on which version you're downloading (you will not be asked to do this if you're downloading Windows 8.1). You should first download the media creation tool for the Windows version you want to download. Before we move ahead, you should know that Windows no longer offers downloads for Windows 8 - only 8.1 is available.
The process for downloading both this software is the same. The official way that Microsoft recommends downloading 8.1 and 10 ISOs is by using the media creation tool.
These download methods are legal and completely safe. No, we aren't talking about downloading illegal torrents or visiting any sites on the dark web. As an alternative, Microsoft allows you to download Windows ISO files for free.