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Calibre will allow you to view, manage and convert electronic books. Organize and work with all your digital library by downloading Calibre for free


Easily manage your collection of eBooks and your reader

August 17, 2023
9 / 10

eBooks are now a reality. Not even reading has been able to avoid surrendering to technological advances, therefore, nowadays any citizen uses an eBook reader and makes the most of the many advantages of this system: thousands of books in your pocket to be read, money and paper saving...

Calibre is a free program that has become essential for eBook readers thanks to its features. Organizing and managing your entire collection of eBooks will be very easy with this application.

Calibre is the comprehensive solution for all the needs of your eBooks.

The ultimate application to work with eBooks

Just like any other reader, Calibre is capable of opening all sorts of eBooks to be read. But this isn't its only function, and neither its most important one. With Calibre you can manage your entire virtual library, organize it in thousands of different ways, carry out conversions between book formats to make them compatible with many devices (including Amazon's popular Kindle or Apple's iPad), synchronize your books with the reader, download news from the Internet and convert them to the corresponding format or place your book collection on an online server to download them from anywhere around the world.


  • eBook viewer with support for content tables, tags, CSS, text search, printing...
  • Organize your books by author, title, date on which they were added to the collection, publishing date, size, score...
  • Support for metadata and covers, that you will be able to download from the Internet depending on titles, authors or ISBN: add tags to classify your collection or comments in order to insert descriptions, notes...
  • Simple and advanced search for books in your digital library.
  • Compatible with a great amount of eBook formats: CBZ, CBR, CBC, EPUB, FB2, HTML, LIT, LRF, MOBI, ODT, PDF, PRC**, PDB, PML, RB, RTF, TCR y TXT.
  • Readjust the size of the texts to optimise reading.
  • Subscribe to online newspapers and RSS news channels.
  • Export parts of your collection to your hard drive under a folder structure.
  • Powerful file conversion engine capable of rescaling fonts.
  • Detect and create book structures.
  • Access your books from any browser thanks to the application's server...

Total compatibility

The developers of Calibre, aware of the great amount of eBook readers available, have encouraged high compatibility between them all, or at least, a system capable of solving possible errors. In view of an incompatibility problem between any format and the reader, Calibre is capable of converting it automatically so as to be able to synchronize it easily.

Upgrade your eBook reader by updating your personal eBook collection. Download Calibre for free and enjoy literature as never before.

Elies Guzmán

With a degree in History, and later, in Documentation, I have over a decade of experience testing and writing about apps: reviews, guides, articles, news, tricks, and more. They have been countless, especially on Android, an operating system...

Antony Peel

Antony Peel