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How to Manage Your Ebook Library with Caliber

How to Manage Your Ebook Library with Caliber

Caliber is software that lets you manage all your ebooks together under one umbrella. With Caliber, you don’t have to worry about using different apps to read books in different formats. You also don’t have to worry about browsing your file explorer trying to find books because Caliber has everything organized neatly. It’s free, open source, and accessible on computers and mobile devices. Learn how you can manage your ebook library with Caliber in this tutorial.

Caliber makes managing your ebook easy. This is possible because of the steps we describe below.

Adding Books to Your Library

Caliber provides several options for adding new books to your library.


  • Add books from a single directory: this option allows you to choose to add books from a specific directory.
  • Add books from directories and sub-directories: this allows you to select a directory as the source for books. This option basically scans the directory and all sub-directories for ebooks and adds them to your library.
  • Add multiple books from archives (ZIP / RAR): this option allows you to add books stored in ZIP or RAR archives.
  • Add blank book (Unformatted Book Entry): this option allows you to create blank book notes and is useful if you don’t have any books in your collection. You can fill in the information related to it for reference.
  • Append from ISBN: this option allows you to add books by their ISBN number.
  • Add file to selected notebook: this option allows you to add or update files associated with existing book notes.
  • Add blank files to selected notebook notes: this allows you to add blank files to the selected notes.

After choosing the option that works best for you, simply select the books you need to be available in your library. You can also drag and drop books into your library.

Deleting a book is as easy as selecting the book you want to delete and selecting the “Delete book” option.

Sidebar interface

You’ll find several filters in the Caliber sidebar that let you quickly sort your books when you search for a specific book or book category.


The filters included by default are:

  • Author
  • Language
  • Series
  • Format
  • Publisher
  • Rating
  • News
  • Tags
  • Identifier

Search Bar

If you know some identifying information about a book you’re trying to find in a library, you can simply enter it into the search bar.


There is also an option to perform an advanced search. Do this by clicking the gear icon in the search bar. Perform advanced searches based on a specific combination of words, tags, title, author, series and date.


Metadata Editing

Caliber is usually correct, but sometimes the metadata are not quite right when the book is imported. Edit this easily by selecting the “Edit metadata” option. Edit information such as the date the book was published or add comments. The more information you enter about your book, the easier it will be to find and organize it.


Converts to Various Formats

Caliber supports several different formats. List of supported formats are: AZW, AZW3, AZW4, CBZ, CBR, CBC, CHM, DJVU, DOCX, EPUB, FB2, FBZ, HTML, HTMLZ, LIT, LRF, MOBI, ODT, PDF, PRC, PDB, PML, RB, RTF, SNB, TCR, TXT, and TXTZ.

Apart from being able to manage these files, Caliber can convert them to the following formats: AZW3, EPUB, DOCX, FB2, HTMLZ, OEB, LIT, LRF, MOBI, PDB, PMLZ, RB, PDF, RTF, SNB, TCR, TXT, TXTZ , and ZIP. This makes it easy to distribute your book across multiple devices.

To convert books, simply select the “Convert books” option and select the “Convert individually” or “Bulk conversion” option.


When choosing conversion options, you can select the output format and change the cover image of the book, among others. In the sidebar, you can change cosmetics such as the appearance of text in a book.


Transferring Files to Device

If you attach a device such as an ebook reader, phone, or tablet to your computer running Caliber, a Devices button will appear that will allow you to send books to your device. Since you can convert your book to a variety of formats, you shouldn’t have any problems sending the book to various devices in the proper format.


If you press the Devices button, you will be able to see all the books that are on the device that you have attached to your computer. To send a book, go to your library, make a selection, then press the “Send to device” button. Select the device you want to send the book to for transferring.


Share Books and Back Up Your Library

This management software comes with powerful sharing and backup features. Having a great library collection is one thing, but the ability to make it accessible is another story. You can quickly and easily set up a content server that will allow you to access your books from any device with an Internet connection. To initiate a connection, simply select “Start Content Server” under the “Connect / Share” button.

You can then access your library from other devices connected to your home network. To do this, you’ll need to enter the IP address of the computer you are running Caliber on, along with the port number assigned to Caliber. This information is displayed next to the “Start / Stop Content Server” button. For example, if your IP address is and port number is “8080”, you can access the content server by typing.

to a web browser on a device connected to your home network. If you access the content server from a computer outside your home network, you will need to enter the router settings and forward the port you assigned to Caliber.


You can also share books via email with Caliber. Additionally, there is a Caliber Companion app available for iOS and Android which will allow you to access your Caliber library.


This will allow you to access your library via the content server or the “Start a wireless device connection” option in Caliber. You also have the option to connect to a cloud service.

To back up / restore your freebies, click on the drop-down arrow attached to Caliber Library and select the “Export / Import All Caliber Data” button.

Editing Books

Caliber also gives users the ability to edit ebooks. In particular, you will be able to work with EPUB and AZW3 files. This can be useful for adding notes to yourself in a book.


Loyal readers need powerful tools on their computers to manage their eBooks. With features like the ability to convert to and from multiple formats and the ability to add custom filters, Caliber fits the bill perfectly. You’re also not limited to just using it on your computer, thanks to the content server options and the companion app.

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