You can use a Mac's default image-viewing program, Preview, to resize any image or multiple images at once. Here's how to resize images on a Mac.

You can convert a JFIF file to JPG, though the two formats are nearly identical, and most software will open a JFIF file as a JPG.

To insert an in-cell picture saved on your device, from Microsoft's gallery, or imported through the web images search, first ...

To zoom out to normal size, hold three fingers together and double-tap the screen with all three fingers at once. To turn off Zoom go to Settings > Accessibility > Zoom > Off. This article explains ...