Epub is now support by Amazon through SendToKindle, by Email or by using the App. So I've made it simple to support the size limit constraint of those services.

Installation

First ensure to have a working version of GO: Installation

Then install the last version of the tool:

$ go install github.com/celogeek/go-comic-converter/v2

To force install a specific version:

$ go install github.com/celogeek/go-comic-converter/v2@V2TAG

Example:

$ go install github.com/celogeek/go-comic-converter/v2@v2.0.1

Add GOPATH to your PATH

$ export PATH=$(go env GOPATH)/bin:$PATH

Check last version

You can check if a new version is available with:

$ go-comic-converter -version
go-comic-converter
  Path             : github.com/celogeek/go-comic-converter/v2
  Sum              : ...
  Version          : v2.0.2
  Available Version: v2.0.2

To install the latest version:
$ go install github.com/celogeek/go-comic-converter/v2@v2.0.2

Supported image files

The supported image files are jpeg and png from the sources.

The extensions can be: jpg, jpeg, png.

The case for extensions doesn't matter.

Usage

Convert directory

Convert every supported image files found in the input directory:

$ go-comic-converter -profile KS -input ~/Download/MyComic

By default it will output: ~/Download/MyComic.epub

Convert CBZ, ZIP, CBR, RAR, PDF

Convert every supported image files found in the input directory:

$ go-comic-converter -profile KS -input ~/Download/MyComic.[CBZ,ZIP,CBR,RAR,PDF]

By default it will output: ~/Download/MyComic.epub

Convert with size limit

If you send your ePub through Amazon service, you have some size limitation:

Email : 50Mb (including encoding, so 40Mb for RAW file)
App : 50Mb
Website: 200Mb

You can split your file using the "-limitmb MB" option:

go-comic-converter -profile KS -input ~/Download/MyComic.[CBZ,ZIP,CBR,RAR,PDF] -limitmb 200

If you have more than 1 file the output will be:

~/Download/MyComic PART_01.epub
~/Download/MyComic PART_02.epub
...

The ePub include as a first page:

Title
Part NUM / TOTAL

If the total is above 1, then the title of the epub include:

Title [part/total]

Dry run

If you want to preview what will be set during the convertion without running the conversion, then you can use the -dry option.

$ go-comic-converter -input ~/Downloads/mymanga.cbr -profile KS -auto -manga -limitmb 200 -dry
Go Comic Converter

Options:
    Input              : ~/Downloads/mymanga.cbr
    Output             : ~/Downloads/mymanga.epub
    Author             : GO Comic Converter
    Title              : mymanga
    Workers            : 8
    Profile            : KS - Kindle Scribe - 1860x2480 - 16 levels of gray
    Quality            : 85
    Crop               : true
    Brightness         : 0
    Contrast           : 0
    AutoRotate         : true
    AutoSplitDoublePage: true
    NoBlankPage        : false
    Manga              : true
    HasCover           : true
    AddPanelView       : false
    LimitMb            : 200 Mb

Change default settings

Show current default option

$ go-comic-converter -show

Go Comic Converter

Options:
    Profile            :
    Quality            : 85
    Crop               : true
    Brightness         : 0
    Contrast           : 0
    AutoRotate         : false
    AutoSplitDoublePage: false
    NoBlankPage        : false
    Manga              : false
    HasCover           : true
    AddPanelView       : false
    LimitMb            : nolimit

Change default settings

$ go-comic-converter -manga -auto -profile KS -limitmb 200 -save

Go Comic Converter

Options:
    Profile            : KS - Kindle Scribe - 1860x2480 - 16 levels of gray
    Quality            : 85
    Crop               : true
    Brightness         : 0
    Contrast           : 0
    AutoRotate         : true
    AutoSplitDoublePage: true
    NoBlankPage        : false
    Manga              : true
    HasCover           : true
    AddPanelView       : false
    LimitMb            : 200 Mb

Saving to ~/.go-comic-converter.yaml

If you want to change a setting, you can change only one of them

$ go-comic-converter -manga=0 -save

Go Comic Converter

Options:
    Profile            : KS - Kindle Scribe - 1860x2480 - 16 levels of gray
    Quality            : 85
    Crop               : true
    Brightness         : 0
    Contrast           : 0
    AutoRotate         : true
    AutoSplitDoublePage: true
    NoBlankPage        : false
    Manga              : false
    HasCover           : true
    AddPanelView       : false
    LimitMb            : 200 Mb

Saving to ~/.go-comic-converter.yaml

Check

You can test the command dry above like

$ go-comic-converter -input ~/Downloads/mymanga.cbr -dry
Go Comic Converter

Options:
    Input              : ~/Downloads/mymanga.cbr
    Output             : ~/Downloads/mymanga.epub
    Author             : GO Comic Converter
    Title              : mymanga
    Workers            : 8
    Profile            : KS - Kindle Scribe - 1860x2480 - 16 levels of gray
    Quality            : 85
    Crop               : true
    Brightness         : 0
    Contrast           : 0
    AutoRotate         : true
    AutoSplitDoublePage: true
    NoBlankPage        : false
    Manga              : true
    HasCover           : true
    AddPanelView       : false
    LimitMb            : 200 Mb

### Reset default To reset all value to default:

$ go-comic-converter -reset
Go Comic Converter

Options:
    Profile            :
    Quality            : 85
    Crop               : true
    Brightness         : 0
    Contrast           : 0
    AutoRotate         : false
    AutoSplitDoublePage: false
    NoBlankPage        : false
    Manga              : false
    HasCover           : true
    AddPanelView       : false
    LimitMb            : nolimit

Reset default to ~/.go-comic-converter.yaml

Help

$ go-comic-converter -h

Usage of go-comic-converter:

Output:
  -input string
    	Source of comic to convert: directory, cbz, zip, cbr, rar, pdf
  -output string
    	Output of the epub (directory or epub): (default [INPUT].epub)
  -author string (default "GO Comic Converter")
    	Author of the epub
  -title string
    	Title of the epub
  -workers int (default CPU)
    	Number of workers
  -dry
    	Dry run to show all options

Config:
  -profile string
    	Profile to use:
    	    - K1      (   600x670 ) -  4 levels of gray - Kindle 1
    	    - K11     ( 1072x1448 ) - 16 levels of gray - Kindle 11
    	    - K2      (   600x670 ) - 15 levels of gray - Kindle 2
    	    - K34     (   600x800 ) - 16 levels of gray - Kindle Keyboard/Touch
    	    - K578    (   600x800 ) - 16 levels of gray - Kindle
    	    - KDX     (  824x1000 ) - 16 levels of gray - Kindle DX/DXG
    	    - KPW     (  758x1024 ) - 16 levels of gray - Kindle Paperwhite 1/2
    	    - KV      ( 1072x1448 ) - 16 levels of gray - Kindle Paperwhite 3/4/Voyage/Oasis
    	    - KPW5    ( 1236x1648 ) - 16 levels of gray - Kindle Paperwhite 5/Signature Edition
    	    - KO      ( 1264x1680 ) - 16 levels of gray - Kindle Oasis 2/3
    	    - KS      ( 1860x2480 ) - 16 levels of gray - Kindle Scribe
    	    - KoMT    (   600x800 ) - 16 levels of gray - Kobo Mini/Touch
    	    - KoG     (  768x1024 ) - 16 levels of gray - Kobo Glo
    	    - KoGHD   ( 1072x1448 ) - 16 levels of gray - Kobo Glo HD
    	    - KoA     (  758x1024 ) - 16 levels of gray - Kobo Aura
    	    - KoAHD   ( 1080x1440 ) - 16 levels of gray - Kobo Aura HD
    	    - KoAH2O  ( 1080x1430 ) - 16 levels of gray - Kobo Aura H2O
    	    - KoAO    ( 1404x1872 ) - 16 levels of gray - Kobo Aura ONE
    	    - KoN     (  758x1024 ) - 16 levels of gray - Kobo Nia
    	    - KoC     ( 1072x1448 ) - 16 levels of gray - Kobo Clara HD/Kobo Clara 2E
    	    - KoL     ( 1264x1680 ) - 16 levels of gray - Kobo Libra H2O/Kobo Libra 2
    	    - KoF     ( 1440x1920 ) - 16 levels of gray - Kobo Forma
    	    - KoS     ( 1440x1920 ) - 16 levels of gray - Kobo Sage
    	    - KoE     ( 1404x1872 ) - 16 levels of gray - Kobo Elipsa
  -quality int (default 85)
    	Quality of the image
  -crop (default true)
    	Crop images
  -brightness int
    	Brightness readjustement: between -100 and 100, > 0 lighter, < 0 darker
  -contrast int
    	Contrast readjustement: between -100 and 100, > 0 more contrast, < 0 less contrast
  -autorotate
    	Auto Rotate page when width > height
  -auto
    	Activate all automatic options
  -autosplitdoublepage
    	Auto Split double page when width > height
  -noblankpage
    	Remove blank pages
  -manga
    	Manga mode (right to left)
  -hascover (default true)
    	Has cover. Indicate if your comic have a cover. The first page will be used as a cover and include after the title.
  -addpanelview
    	Add an embeded panel view. On kindle you may not need this option as it is handled by the kindle.
  -limitmb int
    	Limit size of the ePub: Default nolimit (0), Minimum 20

Default config:
  -show
    	Show your default parameters
  -save
    	Save your parameters as default
  -reset
    	Reset your parameters to default

Other:
  -version
    	Show current and available version
  -help
    	Show this help message

Credit

This project is largely inspired from KCC (Kindle Comic Converter). Thanks: