imagemagic压缩jpg图片

I use always:

• quality in 85
• progressive (comprobed compression)
• 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.
• Strip any comment or exif tag

in imagemagick should be

1

convert -strip -interlace Plane -gaussian-blur 0.05 -quality 85% source.jpg result.jpg

hope this be useful.

http://stackoverflow.com/questions/7261855/recommendation-for-compressing-jpg-files-with-imagemagick