The most direct way to get JPGs on any computer is through the web interface: Log into iCloud.com/photos . Select Photos: Choose the images you want to download.
You can set your iPhone to automatically convert images when you plug it into a computer: Go to > Photos . Download Apple jpg
The "Download Apple jpg" request typically refers to two distinct needs: downloading your personal photos from iCloud in a universal format (JPG) instead of Apple’s default HEIC, or finding official Apple-related imagery like logos for creative projects. Downloading Your Personal Photos as JPG The most direct way to get JPGs on