linux imagemagick scripts to reduce photo size

Let's now look at the top two ImageMagick JPEG compression strategies from this StackOverflow post, then try combining them. Write it up on here as a handy copy-paste reference for future me.Learn which convert arguments/parameters are best for balancing quality with file size.Honestly, every time I've needed to optimize images, I've always googled 'imagemagick convert compress jpg' and copy-pasted from StackOverflow. (I did brew install imagemagick to get it onto my Mac.) If you don't have it yet, follow the instructions at to install it. When you install it, you can type convert at the command line (followed by whatever parameters you want) to resize, optimize, distort, and draw on images. but i've never used them.ImageMagick is a tool for editing images. There is as well optipng, pngcrush, jpegtran and several other tools in the image-size-optimization-corner. If you need more information about trimage either visit the project page or run trimage -h to take a look on the help. You can simply install it via sudo apt install trimageĪfter starting via just the application name you might see the UI

Jpegoptim, depending on the filetype (currently, PNG and JPG files are On further reading I have used x image->Thumbnail (width>160, height>r) and this has got. Image files for websites, using optipng, pngcrush, advpng and using your geometry reduces further to 56kb. Trimage is a cross-platform GUI and command-line interface to optimize a very tiny gausssian blur to optimize the size (0.05 or 0.5 of radius) depends on the quality and size of the picture, this notably optimizes the size of the jpeg.The following example shows compressing with mogrify: mogrify -compress JPEG -quality 50 /path/to/image.jpgĬompressing to 80% using convert works as follows: convert -quality 80% /path/to/source/image.jpg /path/to/result/image.jpgĬonvert somes with a huge set of options, so you could use convert -strip -interlace Plane -gaussian-blur 0.05 -quality 85% /path/to/source/image.jpg /path/to/result/image.jpg The following example shrinks the image dimensions to 50% (so resizing - not compressing) mogrify -resize 50% /path/to/image.jpg You could as well use mogrify which is part of imagemagick. This will overwrite the image - to make sure you have a backup while testing with jpegoptim. Or if you need a defined size via jpegoptim -size=512k /path/to/image.jpg Then either try to optimize filesize of your image via jpegoptim /path/to/image.jpg First install jpegoptim via sudo apt install jpegoptim

Linux imagemagick scripts to reduce photo size