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@samarpanda
Created September 15, 2012 08:33
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Batch optimise images with a single command
#For jpeg files
#Need to install jpegtran in ubuntu
sudo apt-get install libjpeg-progs
Usage tips:
#To optimise a single jpeg image:
jpegtran -copy none -optimise -outfile image.jpg image.jpg
#To optimise all jpegs in the current directory:
for img in `ls *.jpg`; do jpegtran -copy none -optimise -outfile $img $img; done
#To optimise all jpegs in the current directory and all child directories:
find . -name “*.jpg” -print0 | xargs -0 -I filename jpegtran -copy none -optimise -outfile filename filename
#For png files
#optipng is a great little command line tool in Linux that can be used to optimize images for web.
#Need to install optipng in ubuntu
sudo apt-get install optipng
Usage tips:
$ optipng infile.png -out outfile.png
$ optipng -k file1.png file2.tiff file3.gif
* -k option ensures that a backup of the original files are retained. Else, the original files will be over written – if they are PNG of course.
$ optipng -o5 file1.png file2.tiff file3.gif
* -o option indicates the levels of optimization. -o5 indicates 5 levels of optimization.
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