Simple go app that uses ImageMagick to compress multipage TIFFs without losing the pages.

compress-multipage-tiff.go

/*
# This werks in OSX ... need to build the C deps locally, then run your go app
# with the appropriate CGO* flags.

http://www.imagemagick.org/download/releases/ImageMagick-7.0.6-10.tar.xz
tar xvzf ImageMagick-7.0.6-10.tar.xz

cd ImageMagick-7.0.6-10
mkdir dist
export CGO_IMAGEMAGICK_PREFIX=`pwd`/dist

# The .../Cellar reference is to (maybe) pick up any libs already installed by brew that it needs *shrug*
CFLAGS=-I/usr/local/Cellar ./configure --prefix=$CGO_IMAGEMAGICK_PREFIX --with-quantum-depth=16 --disable-dependency-tracking --without-perl

make && make install

CGO_CFLAGS="-I $CGO_IMAGEMAGICK_PREFIX/include/ImageMagick-7/" CGO_LDFLAGS="-L $CGO_IMAGEMAGICK_PREFIX/lib/ -lMagickWand-7.Q16HDRI -lMagickCore-7.Q16HDRI" go run compress-multipage-tiff.go

*/

package main

import (
	"gopkg.in/gographics/imagick.v3/imagick"
	"log"
)

func tiffCompress(infile string, outfile string) {
	imagick.Initialize()
	defer imagick.Terminate()

	mw := imagick.NewMagickWand()
	aw := imagick.NewMagickWand()
	defer mw.Destroy()
	defer aw.Destroy()

	err := mw.ReadImage(infile)
	if err != nil {
		log.Fatal(err)
		return
	}

	for i := 0; i < int(mw.GetNumberImages()); i++ {
		log.Printf("i=%d\n", i)
		mw.SetIteratorIndex(i)
		tw := mw.GetImage()
		aw.AddImage(tw)
		tw.Destroy()
	}

	aw.SetImageFormat("TIFF")
	aw.SetImageCompression(imagick.COMPRESSION_LZW)
	aw.WriteImages(outfile, true)
}

func main() {
	tiffCompress("input1.tif", "compressed1.tif")
	tiffCompress("input2.tif", "compressed2.tif")
}