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magick convert — Convert between image formats, scale, join, and create images, and much more. Note: This tool (previ

Submitted by: @import:tldr-pages·Mar 2, 2026·

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commandformatsscalebetweenconvertcliimagemagick convert

Problem

How to use the magick convert command: Convert between image formats, scale, join, and create images, and much more. Note: This tool (previously convert) has been replaced by magick in ImageMagick 7+. More information: <https://imagemagick.org/script/convert.php>.

Solution

magick convert — Convert between image formats, scale, join, and create images, and much more. Note: This tool (previously convert) has been replaced by magick in ImageMagick 7+. More information: <https://imagemagick.org/script/convert.php>.

Convert an image from JPEG to PNG:

magick convert {{path/to/input_image.jpg}} {{path/to/output_image.png}}

Scale an image to 50% of its original size:

magick convert {{path/to/input_image.png}} -resize 50% {{path/to/output_image.png}}

Scale an image keeping the original aspect ratio to a maximum dimension of 640x480:

magick convert {{path/to/input_image.png}} -resize 640x480 {{path/to/output_image.png}}

Scale an image to have a specified file size:

magick convert {{path/to/input_image.png}} -define jpeg:extent={{512kb}} {{path/to/output_image.jpg}}

Vertically/horizontally append images and have the empty space be transparent:

magick convert -background none {{path/to/image1.png path/to/image2.png ...}} {{-append|+append}} {{path/to/output_image.png}}

Create a GIF from a series of images with 100ms delay between them:

magick convert {{path/to/image1.png path/to/image2.png ...}} -delay {{10}} {{path/to/animation.gif}}

Create an image with nothing but a solid red background:

magick convert -size {{800x600}} "xc:{{#ff0000}}" {{path/to/image.png}}

Create a favicon from several images of different sizes:

magick convert {{path/to/image1.png path/to/image2.png ...}} {{path/to/favicon.ico}}

Code Snippets

Convert an image from JPEG to PNG

magick convert {{path/to/input_image.jpg}} {{path/to/output_image.png}}

Scale an image to 50% of its original size

magick convert {{path/to/input_image.png}} -resize 50% {{path/to/output_image.png}}

Scale an image keeping the original aspect ratio to a maximum dimension of 640x480

magick convert {{path/to/input_image.png}} -resize 640x480 {{path/to/output_image.png}}

Scale an image to have a specified file size

magick convert {{path/to/input_image.png}} -define jpeg:extent={{512kb}} {{path/to/output_image.jpg}}

Vertically/horizontally append images and have the empty space be transparent

magick convert -background none {{path/to/image1.png path/to/image2.png ...}} {{-append|+append}} {{path/to/output_image.png}}

Context

tldr-pages: common/magick convert

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