This is almost a copy paste from here.
MangaDown allows you to fastly download chapters from a manga. Its purpose is to support a large amount of websites using a parsing file for each. I already created 3 but you can create more if you want, I will add them to the repo and credit you if you send me the parser!. MangaDown is cross platform and depends on SFML2. I don’t provide Linux binaries yet, but you can compile it by yourself.
Here you can find some help about how to use MangaDown. Remember that using it under Windows or under a UNIX OS makes the command ./bin/MangaDown change to bin\MangaDown.exe. If you installed MangaDown using the pkg you can also do MangaDown. Remember you need to have the folder parsers with the parsers file inside of it in the working directory.
$ make
$ ./bin/MangaDown http://www.mangareader.net/93/naruto.html 120 140Download the lastest version here. Last Update: 05/08/2012 12:40 GMT +01
Currently supported parsers are:
To create a parser there is a tutorial you can watch.
If you need any further support feel free to contact me at GitHut @posva or by mail at posva13@gmail.com.