Search code examples
imageimagemagick

ImageMagick: resize image and reduce file size

Using ImageMagick, I'm trying to resize a JPEG's dimensions and reduce the file size.

The issue is that I don't want to worsen the image quality.

I've tried the following commands:

convert -resize 170x80 -resample 100x100 image1.jpg image2.jpg

=> A resized picture but with bad quality.

convert -resize 170x80 -quality JPEG image1.jpg image2.jpg

=> A resized image and with good quality, but the same file size.

convert -density 600 -resize 170x80 image1.jpg image2.jpg

=> A resized image but very bad quality.

I don't know what option I should use.

Solution

  • I've managed to solve this issue using convert and mogrify :

    convert -flatten -colorspace RGB myImage.jpg myImage.jpg 
&& 
mogrify -quality JPEG -geometry 170x80 myImage.jpg