A faster way of getting image size from jpg files?

New to Julia
,
6

If you are willing to use ImageMagick.jl, this seems substantially faster on my machine:

using ImageMagick

function imagesize(filename)
       wand = ImageMagick.MagickWand()
       ccall((:MagickPingImage, ImageMagick.libwand), Bool, (Ptr{Cvoid}, Ptr{UInt8}), wand, filename)
       size(wand)
end
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