Choose what to read next
Save your next volume to Want to Read. To group books by series or subject, select books and folders and add them to a collection.
Organize and read your own books
Add your book folders as libraries. You can build a reading list and check which volumes are missing from a series without moving the files.
Set covers and details for a series
Apply the author and publisher across several volumes, then choose a cover for each. Use your own image or select a page from the book.
Read right where you organize
Read comics and ebooks, or listen to audiobooks. Send books to Readive when you want to read on your mobile device.
Start with the task you need
Follow step-by-step guides to split collections, edit book details and connect a NAS. Check supported formats and before-and-after examples. These guides are currently available in Korean.
Split a comic ZIP collection into individual CBZ volumes (Korean)
Analyze volume folders inside an archive, then choose the output format and destination to create separate books.
Batch edit ComicInfo.xml metadata (Korean)
Find titles, authors and publishers and apply them to a series. Learn which details each format can save and how to edit covers.
Add books from a NAS and read on mobile (Korean)
Add a NAS folder as a library and access your books on other devices through OPDS, WebDAV or Readive.
See your library take shape
Explore the app, from browsing and organizing files to editing book details, reading and sending books to mobile. Demos show the Korean interface.
Remember a word, find the book
Add folders from your computer, external drives and NAS as libraries. Search filenames, book details and words in the text without switching between folders.
Narrow your search with details and tags
Search across your libraries and combine filters such as author, genre, publisher and year.
Find books by words in their text
Build a content search index to find EPUB, PDF and TXT files by words in their text. Scanned documents that require OCR are excluded.
Check for duplicates and missing volumes
Compare possible duplicates with similar filenames and volume details, and find gaps in a series' volume or chapter numbers.
Organize comic volumes and pages
Split a comic archive into volumes or put pages with inconsistent names back in order. Drag in files or folders and review the output names and destinations before you begin.
Split collections by volume or chapter
Turn volume folders inside a ZIP into separate book files. Check output names and destinations before you begin.
Simplify complex archive structures
Clean up nested folders and gather images into a structure that works well in your reader.
Make page names and order consistent
Rename images with a shared naming rule and adjust their order. You can also check for missing page numbers and reduce image file sizes.
To keep your original comic files, enable the original backup option in Settings before starting.
Edit TXT files and EPUBs
Use the file tools to fix distracting line breaks, or turn your own writing into an ebook with a cover and table of contents.
Text Cleaner
Join lines that break mid-sentence and remove extra spaces. Compare the result with the original side by side and make your own edits.
EPUB Studio
Start a new book or import an existing EPUB. Reorder chapters, edit the text and cover, and preview the book before exporting an EPUB 3 file.
EPUB Size Optimizer
See which images and fonts take up space in a book. Adjust image quality and dimensions, and choose which unused assets to remove.
Give your files covers and stories
Look up comics in Korean Webtoons or audiobooks in Audible. Sources such as RIDI and Google Books also let you find covers, authors and summaries to add to your books.
Search for book details
Import search results into the editor, review them and apply your changes. If a title is hard to identify, use AI title lookup to suggest possible titles from the cover.
Apply shared details to a series
Apply authors, publishers, genres and summaries across a series, while managing each file's title, volume number and page count separately.
Keep metadata with your files
Depending on the format, save ComicInfo.xml, EPUB and PDF metadata, or audio tags and covers in the files themselves. For TXT files, book details and covers are stored separately in the app.
Search sources vary by book type. Some search services and AI features require you to configure your own API keys.
Open a book or press play
Enjoy comics, EPUB, PDF, TXT and audiobooks with built-in readers and players. Save bookmarks and your last reading position to pick up where you left off.
A reading view that suits you
- Choose Automatic view to fit one or two pages to your window and scroll through vertical webtoons
- Themes and page transitions to adjust your reading experience
- Search within EPUB, PDF and TXT files and jump to matching text
- Listen to EPUB and TXT with a system voice, or download the Supertonic 3 model for on-device narration
Audiobooks that fit your day
- Adjust playback speed and skip intervals
- Playlists and continuous track playback
- Bookmark moments to revisit and set a sleep timer
- Keep listening with the mini player while organizing books
Take your desktop library to your devices
Organize on your computer and read on the device you prefer. Send files to Readive or open your shared library in a compatible app.
Send your next read to Readive
- Choose your computer’s address on a shared local network or Tailscale network, then scan the QR code in Readive to pair
- Send selected books and folders from your computer to your mobile device
- Browse and import books from your BookManager library in Readive
- Sync the reading position and reading status of linked books
Browse your library in other apps
- OPDS: Browse and download books in compatible ebook apps
- Web: Browse your library in a web browser
- WebDAV: Access book files in compatible apps
Keep BookManager and the sharing or connection service running on your computer while another device browses or receives books.
Keep the file formats you already use
Manage comics, documents and audiobooks in one library. Available tools and metadata storage depend on the file format.
Comics
ZIP, CBZ, RAR, CBR, 7Z, CB7
Ebooks and documents
EPUB, PDF, TXT
Audiobooks
MP3, M4A, M4B, FLAC, AAC, AIF/AIFF, OGA/OGG/OPUS, WAV/WAVE and more
Before you get started
Is BookManager free?
BookManager is a free, open-source app released under the MIT license. It supports Windows and macOS, with Korean, English and Japanese interfaces. Search, AI and text-to-speech features that use external APIs may be subject to those services' terms and fees.
Can I manage books on a NAS?
Yes. Add a NAS or external drive as a library if your computer can access it as a folder. Scan covers and book details, then search alongside your other libraries. The drive must be connected to open or organize its files.
Does editing book details change the original files?
For formats that support writing, saving changes updates metadata in the actual files. TXT book details and covers are stored separately in the app without changing the text, and direct metadata writing to RAR/CBR is not supported. Audiobook tags and covers can be saved in AAC, AIF/AIFF, FLAC, M4A/M4B, MP3, OGA/OGG/OPUS and WAV/WAVE; 3GP, AMR, CAF and WEBM support analysis only. Enable the original backup option before starting if you need to keep the originals.
Can I use it with my existing reader or library server?
You can choose an external reader for each file format or open organized files in other apps. Compatible readers and servers can use ComicInfo.xml and EPUB or PDF metadata. The details displayed depend on each app's support.
Start with your first library
Download the file for your operating system, extract it and launch the app. Add a folder containing your books as a library and start browsing.