15 April 2012

ImageMagick Cheat Sheet

The following commands were taken from the internet, I will give acknowledge when found:

Windows version now uses "magick" as the command:

magick vlcsnap-1280-07-14-21h45m00s867.png -crop 400x360+0+0 i1.png

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create thumbnail:
convert -geometry 100x100 -quality 100 orgfilename.jpg thumbfilename.jpg

rotate an image:
convert orgfilename.jpg -rotate 60 rotated60.jpg

croping an image:
convert orgfilename.jpg -crop 128×128+50+50 cropped.jpg

croping an image for several files:

for file in *.png; do convert -crop 863x675+227+51 "$file" "x6/$file"; done 

convert a directory of png images to gif:
mogrify -format gif *.png
 
mogrify -format webp *.png 

watermarking with text:
convert orgfilename.jpg -font Arial -pointsize 20 -draw "gravity south fill black text 0,12 'Watermark' fill white text 1,11 'Watermark' " wmark_text_drawn.jpg

convert pdf to png
convert pdffile.pdf -colorspace RGB -resample 72×72 -units PixelsPerInch -quality 90 -resize 500×500 -size 500×500 pngfile.png


Convert jpg to pdf
convert *.jpg output.pdf
 

convert input.png PNG24:output.png

convert i00.png -crop 319x160+8+24 PNG24:r00.png

For several images to a single PDF: (yeah, not magick)

img2pdf --out z2.pdf *.png

 

Compression for PNG:

pngquant *.png

PDF too big (from jpg)
convert -quality 60 *.jpg output.pdf


Resize an image:
convert image.jpg -resize 800 image.png
(porcentaje no me funco bien)

mogrify -path xx -resize 800 *.jpg

cd to the directory where your images are located (temp) after creating a new directory to hold the changed files (say, temp2)
mogrify -path fullpathto/temp2 -resize 60x60% -quality 60 -format jpg *.png

Compare to images:
compare image1 image2 -compose src diff.png
estas imagenes pueden ser en diferente formato inclusive ! 
compare PC-200617-1248-30.pdf PC-270717-1119-53.pdf diff.pdf (pdf)
 
Append two images:

convert image1.jpg image2.jpg -append result.jpg 

To verify ImageMagick is working properly, type the following in a Windows Command Prompt window:

convert logo: logo.gif 
identify logo.gif

imdisplay


To see details of the image: (information) 

identify image.ext

identify dp1.jpg
dp1.jpg JPEG 300x374 300x374+0+0 8-bit sRGB 34082B 0.000u 0:00.009

magick identify image

magick identify -verbose r00.png

Invert colors:

convert input.png -channel RGB -negate output.png 


Black & White colors:

convert input.png -colorspace Gray output.png 

Problems with spaces and hyphens in filenames

find . -name "* *" -type f | rename 's/ /_/g'

 

 

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The views expressed on this blog are my own and do not necessarily reflect the views of Oracle.