• Educational Software

Calibre logo

Key Details of Calibre

  • Manage your eBook library and synchronize to reader devices
  • Last updated on 04/07/20
  • There have been 3 updates within the past 6 months


Editors' Review

An all-in-one solution for handling your e-books, Calibre does for electronic books just what iTunes does for music, allowing you to manage your digital book collection through an intuitive albeit overcrowded interface while offering excellent support for converting books to different formats and editing their metadata. The only area where the software is lacking is its e-book reader; it doesn't allow you to highlight or add notes to your books.

E-book converter: With Calibre you can take an e-book in one file format and convert it to another that is supported by your e-book reading device and, if you're not happy with the result, you can tweak the conversion settings and even manually edit the book's contents and formatting. It took us four seconds to convert a 40-page e-book from PDF to ePub.

E-book reader: The software comes with a basic e-book reader that supports fullscreen mode for distraction-free reading and that lets you choose your preferred method of pagination and gives you the ability to bookmark pages. Unfortunately, there is no way to annotate, highlight, or augment the book's contents short of editing the book itself.

E-book organizer: Similar to iTunes, the app is much more than an e-book reader: it acts also as your e-book library, providing a central place where you can organize and sort your collection and allowing you to edit the book's metadata and even pull information automatically from places like Google and Amazon. On the back-end, each author gets his or her own folder and each e-book gets its own subfolder, which contains all versions of the given book along with its metadata.

Crowded interface: There is a lot going on when you start using the app; just on the main screen there are three search fields and 15 buttons, many of which come with drop-down menus. Fortunately, primary functions are thoughtfully placed where you would expect them to be, so the learning curve is not too steep.

Bottom Line

If you're a serious e-book fan and read on more than one device, you should definitely give Calibre a try. Using this open-source software, you can have all the different versions of your books together in one library while keeping the actual files neatly organized in intelligently named folders.

Full Specifications

What's new in version 4.13.0.

New features:

  • Edit book: When searching in normal mode, have spaces in the search expression match multiple spaces and line breaks in the text
  • When running calibre-portable.exe popup a more useful error message if it is placed in a location with a too long path
  • Edit book: Allow skipping confirmation dialog when marking non-first file as cover page
  • Add a shortcut [Ctrl+Alt+p] to switch to the previously opened library.
  • Viewer: Fix searching in flow mode not scrolling to display the search results
  • Viewer search: Fix jumping to next match sometimes selecting previous match if the searched for expression occurs with identical context in multiple places
  • Viewer: Ensure there is no bleed between pages when using single page per screen
  • Fix shift click not working reliably in the book list
  • Fix edit open with applications not working from files browser in editor
  • MOBI Input: Upshift non-animated GIF to PNG as it is a more widely supported format
  • MOBI Input: Dont auto-convert images in PNG/GIF formats to JPEG
  • MOBI Output: Improve conversion of PNG images with transparency to GIF
  • Check Book: Do not fail if non-UTF-8 stylesheets are present in the book
  • Viewer: Maximum font size for margin text should be the body font size not hardcoded to 12px
  • PDF Output: Ignore glyph size mismatches when merging fonts for TTF.

New news sources:

  • Istorias and Sardinia Post by tzium

Improved news sources:

  • Glasgow Herald
  • Spectator Magazine

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📚 Web app for browsing, reading and downloading eBooks stored in a Calibre database


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Calibre-Web is a web app that offers a clean and intuitive interface for browsing, reading, and downloading eBooks using a valid Calibre database.


Installation via pip (recommended)

  • Quick start


Docker images, contributor recognition, contributing to calibre-web.

This software is a fork of library and licensed under the GPL v3 License.

Main screen

  • Modern and responsive Bootstrap 3 HTML5 interface
  • Full graphical setup
  • Comprehensive user management with fine-grained per-user permissions
  • Admin interface
  • Multilingual user interface supporting 20+ languages ( supported languages )
  • OPDS feed for eBook reader apps
  • Advanced search and filtering options
  • Custom book collection (shelves) creation
  • eBook metadata editing and deletion support
  • Metadata download from various sources (extensible via plugins)
  • eBook conversion through Calibre binaries
  • eBook download restriction to logged-in users
  • Public user registration support
  • Send eBooks to E-Readers with a single click
  • Sync Kobo devices with your Calibre library
  • In-browser eBook reading support for multiple formats
  • Upload new books in various formats, including audio formats
  • Calibre Custom Columns support
  • Content hiding based on categories and Custom Column content per user
  • Self-update capability
  • "Magic Link" login for easy access on eReaders
  • LDAP, Google/GitHub OAuth, and proxy authentication support


  • Create a virtual environment for Calibre-Web to avoid conflicts with existing Python dependencies
  • Install Calibre-Web via pip: pip install calibreweb (or pip3 depending on your OS/distro)
  • Install optional features via pip as needed, see this page for details
  • Start Calibre-Web by typing cps

Note: Raspberry Pi OS users may encounter issues during installation. If so, please update pip ( ./venv/bin/python3 -m pip install --upgrade pip ) and/or install cargo ( sudo apt install cargo ) before retrying the installation.

Refer to the Wiki for additional installation examples: manual installation , Linux Mint , Cloud Provider .

Quick Start

  • Open your browser and navigate to http://localhost:8083 or http://localhost:8083/opds for the OPDS catalog
  • Log in with the default admin credentials
  • If you don't have a Calibre database, you can use this database (move it out of the Calibre-Web folder to prevent overwriting during updates)
  • Set Location of Calibre database to the path of the folder containing your Calibre library (metadata.db) and click "Save"
  • Optionally, use Google Drive to host your Calibre library by following the Google Drive integration guide
  • Configure your Calibre-Web instance via the admin page, referring to the Basic Configuration and UI Configuration guides

Default Admin Login:

  • Username: admin
  • Password: admin123
  • Python 3.5+
  • Imagemagick for cover extraction from EPUBs (Windows users may need to install Ghostscript for PDF cover extraction)
  • Optional: Calibre desktop program for on-the-fly conversion and metadata editing (set "calibre's converter tool" path on the setup page)
  • Optional: Kepubify tool for Kobo device support (place the binary in /opt/kepubify on Linux or C:\Program Files\kepubify on Windows)

Pre-built Docker images are available in the following Docker Hub repositories (maintained by the LinuxServer team):

LinuxServer - x64, aarch64

GitHub - Optional Calibre layer

Include the environment variable DOCKER_MODS=linuxserver/mods:universal-calibre in your Docker run/compose file to add the Calibre ebook-convert binary (x64 only). Omit this variable for a lightweight image.

Both the Calibre-Web and Calibre-Mod images are automatically rebuilt on new releases and updates.

  • Set "path to convertertool" to /usr/bin/ebook-convert
  • Set "path to unrar" to /usr/bin/unrar

We would like to thank all the contributors and maintainers of Calibre-Web for their valuable input and dedication to the project. Your contributions are greatly appreciated.

Join us on Discord

For more information, How To's, and FAQs, please visit the Wiki

Check out our Contributing Guidelines

Security policy

Releases 20, sponsor this project.

  • https://PayPal.Me/calibreweb


Contributors 198


  • Python 40.8%
  • JavaScript 40.8%


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