This article explains how to increase the resolution of an image using desktop GIMP 2.0 or later, macOS Preview (macOS 10.3 or later), and Image Size (iOS 9.0 or later).
Easily convert low-resolution photos to high-resolution photos in Photoshop
Resolution correlates to the number of pixels in a digital photo or image. The more pixels there are, the higher the resolution of the image. Important things to keep in mind:
To reduce the loss of sharpness, you can follow these tips:
GIMP is a free, open-source image editing tool available for Windows, macOS, and Linux. It offers broad support for a wide range of image formats, making it ideal for this type of task.
