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Software - Support => Installing Software => Topic started by: liteuser1 on December 01, 2017, 07:45:39 PM

Title: Compression
Post by: liteuser1 on December 01, 2017, 07:45:39 PM

Hello, i am try to compress some images with imagemagick for my website but getting a bit confused what to type in terminal.

On google`s website https://developers.google.com/speed/docs/insights/OptimizeImages (https://developers.google.com/speed/docs/insights/OptimizeImages)  it shows this --> INPUT.gif_or_png -strip [-resize WxH] [-alpha Remove] OUTPUT.png.

One of my images i need to compress is breeding.jpg. Any help would be appreciated.

liteuser1.

Title: Re: Compression
Post by: ralphy on December 01, 2017, 08:32:19 PM

Browse to the folder where your image is located. Then right click an empty spot and select "Open in Terminal" from the dropdown menu.


Then copy and paste the following Terminal command:

Code: [Select]

convert -strip -interlace Plane -gaussian-blur 0.05 -quality 90% breeding.jpg breeding2.jpg

The command above will compress the image to 90% quality and save it in the same location as the source image as a copy breeding2.jpg - Note that I did not use -resize WxH - that option is only used if you are trying to resize the image instead of compressing it.


For many more ImageMagick options, type convert --help in a Terminal window and have a blast :)

Title: Re: Compression
Post by: liteuser1 on December 01, 2017, 08:39:15 PM

ralphy, cheers for the reply and help. You explained it perfectly for me. I will go to the terminal and type convert --help and read on.