Using Julia and ImageMagick to convert an directory of images from png to jpg

convet_images.jl

input_dir = "images_need_fix/"
output_dir = "images_fixed/"
input_files = readdir(input_dir)

filter!(x->endswith(x,"png"),input_files)

for f in input_files
    input_base_name = splitext(f)[1]
    output_file_name = input_base_name*".jpg"
    from = joinpath(input_dir,f)
    to = joinpath(output_dir,output_file_name)
    println("converting $from to $to")
    run(`convert -strip -interlace Plane -gaussian-blur 0.05 -quality 85% $from $to`)
    if filesize(from) < filesize(to)
        println("re-writing $from to $to")
        cp(from,to,force=true)
    end
end