This is a continuation of our tutorial for converting png images to jpg using ImageMagick. You may refer to the same article to learn about PNG and JPG image formats, and also about ImageMagick.

How to perform JPG to PNG conversion using ImageMagick?

ImageMagick provides a set of command-line tools for performing image manipulation operations. convert is one such tool in the ImageMagick tool suite, that facilitates the conversion of images between various formats. It also provides options to resize an image, blur, crop, despeckle, dither, draw on, flip, join, re-sample, and much more.

You can read the complete convert tool documentation using the man pages. The man page for convert can be read using the following commands:

$ convert --help
   OR
$ man convert

The image format conversion can be done using the following command:

$ convert [original image] [converted image name]

This command can be used to convert between any valid image formats.

If we want to convert multiple jobs at once, we may use a simple batch job like the below:

for image in *.jpg ; 
do 
    convert "$image" "${image%.*}.png" ;
done

In one line, it can be written like,

$ for image in *.jpg ;  do convert "$image" "${image%.*}.png" ; done

Generic format

In general, we can use ImageMagick to convert from any image format to any other image format using the syntax below.

$ convert <source image name & format> <destination image name & format>

# example
$ convert sample.png sample.webp