To convert an image between different formats on a Linux system from the command prompt, you can use the convert utility, which is part of the ImageMagick suite of tools. ImageMagick is a powerful, open-source image processing tool that can be used to create, edit, and convert images between various formats.
To install ImageMagick, you will need to use your system's package manager. On a Debian-based system, such as Ubuntu, you can use the following command:
sudo apt-get install imagemagick
On a Red Hat-based system, such as CentOS, you can use the following command:
sudo yum install imagemagick
Once ImageMagick is installed, you can use the convert command to convert an image between different formats. For example, to convert an image input.jpg to the PNG format and save the result to output.png, you can use the following command:
convert input.jpg output.png
You can specify the desired output format using the -format option:
convert input.jpg -format png output.png
You can also use the -resize option to resize the image while converting it:
convert input.jpg -resize 500x500