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 roof. With Caliber, you don’t have to worry about using different apps to read books in different formats. You also won’t have to worry about going through your file explorer trying to find books because Caliber organizes everything neatly. It’s free, open source, and accessible on computers and mobile devices. Find out how to manage your eBook library with Caliber in this tutorial.

Caliber makes it easy to manage your ebooks effortlessly. This is possible thanks to the steps that we detail below.

Add books to your library

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

Caliber Add Books
  • Add books from a single directory: this option allows you to choose to add books from a specified directory.
  • Add books from directories and subdirectories: this allows you to select a directory as the source for ebooks. This option basically scans a directory and all of its subdirectories for eBooks and adds them to your library.
  • Add multiple books from an archive (ZIP / RAR): with this option you can add ebooks which are stored in ZIP or RAR archives.
  • Add an empty book (book entry without format): this option allows you to create a blank book record and is useful if you don’t have a book in your collection. You can fill in the related information to have them as a reference.
  • Add from ISBN: this option allows you to add a book from its ISBN number.
  • Add files to selected book records: this option allows you to add or update files associated with an existing book record.
  • Add empty file to selected book records: this allows you to add an empty file to a selected recording.

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

Deleting books is as easy as selecting the book (s) you want to delete and selecting the “Delete Books” option.

Sidebar interface

You’ll find a few filters in Caliber’s sidebar that allow you to quickly sort your books when searching for a particular book or book category.

Caliber sidebar filtersCaliber sidebar filters

The filters included by default are:

  • Authors
  • Languages
  • Series
  • Formats
  • Editor
  • Evaluation
  • News
  • Keywords
  • Identifiers

If you know any credentials about a book you’re trying to find in your library, you can just type them into the search bar.

Caliber search barCaliber search bar

There is also the possibility of performing an advanced search. To do this, click on the gear icon in the search bar. Perform an advanced search based on combinations of words, tags, titles, authors, series and particular dates.

Caliber advanced searchCaliber advanced search

Caliber is usually right, but sometimes the metadata is not quite correct when importing a book. Easily edit it by selecting the “Edit Metadata” option. Edit information such as a book’s publication date or add comments. The more information you enter about your books, the easier it will be to find and manage them.

Caliber metadataCaliber metadata

Conversion to various formats

Caliber supports several different formats. The 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.

In addition to 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 books to a wide range of devices.

To convert books, simply select the option “Convert books” and choose the option “Convert individually” or “Convert in bulk”.

Caliber Conversion BooksCaliber Conversion Books

While choosing your conversion options, you can choose the output format and change the cover image of a book among others. In the sidebar, you will be able to change cosmetic elements such as the appearance of the text in the book.

Caliber conversion optionsCaliber conversion options

Transferring files to the device

If you connect a device such as an eBook reader, phone, or tablet to your computer running Caliber, a Device button will appear for you to send books to your device. Since you can convert your books to many different formats, you will have no problem sending them to a wide range of devices in a suitable format.

Caliber sending deviceCaliber sending device

If you press the Device button, you will be able to see all the books located on the device that you have connected to your computer. To send books, go to your library, make a selection, and click the “Send to device” button. Choose the device you want to send the book (s) to to transfer.

Caliber book sending deviceCaliber book mailer

Share books and back up your library

This management software comes with powerful sharing and backup features. It’s one thing to have a nice library collection, but the ability to make it accessible is another story. You can quickly and easily set up a content server that lets you access your books from any device with an Internet connection. To start the 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 will need to enter the IP address of the computer you are running Caliber on, as well as 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 your port number “8080”, you can then access the content server by typing

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

Caliber Share BrowserCaliber Share Browser

You can also share books by email with Caliber. In addition, there is a Caliber Companion app available for iOS and Android which allows you to access your Caliber library.

Caliber CompanionCaliber Companion

It allows you to access your library through the content server or the “Start wireless device connection” option in Caliber. You also have the option to connect to a cloud service.

To backup / restore your free, click on the drop-down arrow attached to the Caliber library and select the “Export / Import all Caliber data” button.

Book publishing

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

Caliber EditionCaliber Edition


Avid readers need a powerful tool on their computer to manage their eBooks. With features like the ability to convert to and from multiple formats and the ability to add custom filters, Caliber is the perfect fit. You’re also not limited to just using it on a computer, thanks to the content server option and companion app. Try Caliber if you want a powerful, easy-to-use, and free eBook manager app.

William elcock
William elcock

William has been playing with technology for as long as he can remember. It naturally turned into helping friends solve their tech issues and then blogging about tech.

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