JPG, also referred to as JPEG, is an image format used by a variety of devices, including digital cameras. It is also one of the default picture formats of many websites. If you download an image from a site, you most likely are going to save a JPG-formatted file. You can save this file format on a Mac computer, and because both PCs and Macs can read the file, you can transfer it over to a PC without any difficulty.
Insert the USB flash drive into an available USB port on the Mac. Wait a moment for the flash drive icon to appear on the desktop.
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Double-click the USB flash drive icon to open a window and display the contents from the drive.
Locate the JPG files on the Mac that you want to convert over to a PC. Click-and-drag these image files into the USB flash drive and allow them to copy completely. Once done, close out the flash drive icon and drag it down to the trashcan icon in the lower right corner of the screen. Once the flash drive icon disappears, it is safe to remove the flash drive from your computer.
Insert the USB flash drive into a USB port on the PC. Momentarily, you will see a message stating that the computer has detected a new removable device.
Open "Computer" (or "My Computer") and double-click the removable disk icon. Click-and-drag the JPG files onto your PC. Wait for the images to finish copying over before opening them. You are going to find that the images can be seen and viewed exactly as they were on a Mac.