convert.demo.sh

= IMAGEMAGICK

Working with images, PDFs and the command line

# convert from one format to another

convert image.gif image.jpg

# convert specific PDF page to image

convert -thumbnail x300 test.pdf[0] test.png

# create thumbnails for all pages in PDF document

convert -thumbnail x300 test.pdf test.png

# as above, controlling the width, having height suited

convert -thumbnail 400 test.pdf test.png

# 转换成宽度为400的缩略图

convert -thumbnail x400 1.jpg 1.tn.jpg

# crop an image from the bottom corner

convert -crop '595x711-0+1309' image.jpg output.jpg

# make a looping animated gif

convert -delay 20 -loop 0 image*.jpg image.gif

# resize image

convert -resize 50% source.png dest.png

# rotate image (-90 degrees)

convert -rotate -90 source.png dest.png

# see list of available compression methods

convert -list compress