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Convert an Image to Grayscale with ImageMagick

By David Walsh on April 9, 2015

A few years ago I bought a DSLR camera with a bunch of filter effects built in and it's been worth every penny. I took some incredible photos in London, Paris, and Jamaica, and tooks some really special photos of my son during his first few years. And many of my favorite photos were taken with grayscale filter but some I took in color and badly wanted them in grayscale. Of course I can use Photoshop to convert the image to grayscale but that's too much work. I have ImageMagick -- why not use the shell to very quickly convert it to grayscale?

Converting the image to grayscale with ImageMagick is simple:

convert my-image.jpg -colorspace Gray my-image-gray.jpg

The command is self-explanatory and executes in milliseconds. And since Photoshop takes a few seconds to start and I have to do the work manually, ImageMagick makes everything so much easier.

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Discussion

MaxArt
How about sepia tones? After all, it’s just like converting to grayscale with a different balance of red, green and blue.

Convert an Image to Grayscale with ImageMagick

Recent Features

Animating CSS3 Transforms with MooTools Fx

CSS @supports

Incredible Demos

CSS Background Animations

Rotate Elements with CSS Transformations

Discussion