I always wanted to have an easy to use program that converts multiple volumes of manga into a .cbz file for my kindle. But I couldn't find one that is able to cut borders, re-size images and combine multiple folders into one file at once.
So I decided to write a little tool that satisfies my needs and thought some of you might find it useful.
Features:
-Load multiple folders at once
-Combine multiple folders
-Re-size images
-Automatically cut away black and white frames
-Split selected folders into multiple output files
How to use it:
First select the input folders where you stored the single images. "Add new input directory" adds a single folder and "Add all directories" adds all sub directories in the selected folder. When your folders are numbered like [0,1,2,...,9,10,11,...] and not like [00,01,02,...,09,10,11,...] you can try to select natural sorting in the drop-down menu on the right (This is a beta function and will not work properly when there are other numbers in the title).
Then select an output folder where the *.cbz will be stored.
"Max. folders per file" is the number of input folders that get combined in a single output file.
Trim Level indicates how much of the border gets cut away.
Finally select a title and click on one of the create buttons. The program will freeze until all the files are converted. So have a bit of patience
If you want additional information on the process you can start the .jar file per CMD.
I hope that you find the program useful. If you want additional features I can try to implement them.