CBconvert

Introduction

CBconvert is a Comic Book convert tool.

Features

reads RAR, ZIP, 7Z, GZ, BZ2, CBR, CBZ, CB7, CBT, PDF, EPUB, XPS and plain directory
always saves processed comic in CBZ (ZIP) archive format
images can be converted to JPEG, PNG, GIF or 4-Bit BMP (16 colors) file format
reads JPEG, PNG, BMP, GIF, TIFF and WEBP file formats
choose resize algorithm (NearestNeighbor, Box, Linear, MitchellNetravali, CatmullRom, Gaussian, Lanczos)
export covers from comics
create thumbnails from covers by freedesktop specification

Download

Using

usage: cbconvert [<flags>] <args>...

Comic Book convert tool.

Flags:
      --help           Show context-sensitive help (also try --help-long and --help-man).
      --version        Show application version.
  -p, --png            encode images to PNG instead of JPEG
  -b, --bmp            encode images to 4-Bit BMP (16 colors) instead of JPEG
  -g, --gif            encode images to GIF instead of JPEG
  -w, --width=0        image width
  -h, --height=0       image height
  -q, --quality=75     JPEG image quality
  -n, --norgb          do not convert images with RGB colorspace
  -f, --filter=0       0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos
  -s, --suffix=SUFFIX  add suffix to file basename
  -c, --cover          extract cover
  -t, --thumbnail      extract cover thumbnail (freedesktop spec.)
  -o, --outdir="."     output directory
  -m, --size=0         process only files larger then size (in MB)
  -G, --grayscale      convert images to grayscale (monochromatic)
  -R, --recursive      process subdirectories recursively
  -Q, --quiet          hide console output

Args:
  <args>  filename or directory

Examples

Rescale images to 1200px for all supported files found in directory with size larger then 60MB:

cbconvert --recursive --width 1200 --size 60 /media/comics/Thorgal/

Convert all images in archive to 4bit BMP image and save result in ~/comics directory:

cbconvert --bmp --outdir ~/comics /media/comics/Garfield/Garfield_01.cbz

BMP format is very good choice for black&white pages. Archive size can be smaller 2-3x and file will be readable by comic readers.

Generate thumbnails by freedesktop specification in ~/.thumbnails/normal directory, Lanczos algorithm is used for resizing:

cbconvert --filter=7 --outdir ~/.thumbnails/normal --thumbnail /media/comics/GrooTheWanderer/

Compile

Install imagemagick dev packages:

apt-get install libmagickcore-dev libmagickwand-dev

Compile latest MuPDF:

git clone git://git.ghostscript.com/mupdf.git && cd mupdf
git submodule update --init --recursive
curl -L https://gist.githubusercontent.com/gen2brain/7869ac4c6db5933f670f/raw/1619394dc957ae10bcd73c713760993466b4bfea/mupdf-openssl-curl.patch | patch -p1
sed -e "1iHAVE_X11 = no" -e "1iWANT_OPENSSL = no" -e "1iWANT_CURL = no" -i Makerules
HAVE_X11=no HAVE_GLFW=no HAVE_GLUT=no WANT_OPENSSL=no WANT_CURL=no HAVE_MUJS=yes HAVE_JSCORE=no HAVE_V8=no make && make install

Compile unarr library:

git clone https://github.com/zeniko/unarr && cd unarr
mkdir lzma920 && cd lzma920 && curl -L http://www.7-zip.org/a/lzma920.tar.bz2 | tar -xjvp && cd ..
curl -L http://zlib.net/zlib-1.2.8.tar.gz | tar -xzvp
curl -L http://www.bzip.org/1.0.6/bzip2-1.0.6.tar.gz | tar -xzvp
curl -L https://gist.githubusercontent.com/gen2brain/89fe506863be3fb139e8/raw/8783a7d81e22ad84944d146c5e33beab6dffc641/unarr-makefile.patch | patch -p1
CFLAGS="-DHAVE_7Z -DHAVE_ZLIB -DHAVE_BZIP2 -I./lzma920/C -I./zlib-1.2.8 -I./bzip2-1.0.6" make
cp build/debug/libunarr.a /usr/lib64/ && cp unarr.h /usr/include

Install dependencies:

go get github.com/cheggaaa/pb
go get github.com/disintegration/imaging
go get github.com/gen2brain/go-fitz
go get github.com/gen2brain/go-unarr
go get github.com/gographics/imagick/imagick
go get github.com/hotei/bmp
go get github.com/skarademir/naturalsort
go get golang.org/x/image/tiff
go get golang.org/x/image/webp    
go get gopkg.in/alecthomas/kingpin.v2

Install go package:

go get github.com/gen2brain/cbconvert
go install github.com/gen2brain/cbconvert

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