DjMngr · Doujinshi manager
This application is made for doujin/manga/comics/novel readers and photographers to manage a collection of zipped image sets , easying their work with sorting files, assigning metedata, searching, and reading online from any device.

As time passes by we accumulate more and more images, saving them individually on disk takes a lot of space, instead zipping each set/folder helps freeing a big chunk of disk space.
Technically speaking we do not save much space by compressing images but instead by reducing unused space in disk blocks: each file does waste some space, so instead of a big number of files wasting precious KiB we only have a single one. This leads to a 10~20% of freed space, YMMV .
In doing so arises the need of an application to easily view these compressed sets of images, in addition to DjMngr there are a miriad of options out there: MComix , FastStone MaxView , ACDsee , and more ; but DjMngr has more to offer than a simple viewer!
  • Curated processing of image sets
  • Read or preview contents from any device
  • Browse by metadata and search by title
  • Find duplicates by title or cover similarity
  • Compare multiple sets side by side
  • Generate EPUB for your device
  • Create shelves, assign scores, set favorites, ...
Collection workflow
Put ZIP files in to-sort folder
Process each ZIP file (individually or in batches)
Add metadata beforehand or while processing
Explore your collection by author/circle/category/...
View details of an item and take actions (read, edit, ...)
On disk folders organization
These three folders can be customized in the Settings menu:
to-sort
Contains ZIP files to be processed in order to add them to the collection.
sorting
Contains ZIP files being processed. Thery are unzipped here for manipulation before being rezipped into the collection.
sorted
Contains the processed ZIP files. An embedded metadata file is added containing both initial and processing data.
ZIP files in sorted folder are arranged diffently by category as follows:
/authors/ <name>/ [subfolder/] file.zip
Author name, optional subfolder, file name
/circles/ <name>/ [subfolder/] file.zip
Circle (group) name, optional subfolder, file name
/magz/ <name>/ [subfolder/] file.zip
Magazine name, optional subfolder, file name
/artbooks/ [series name/] [subfolder/] file.zip
Optional series name, optional subfolder, file name
Technology
This software is a web application written in Ruby with the Ruby on Rails framework at server side, Bulma and jQuery at client side.
Application data is stored in the widely used one-file-database SQLite .