Calibre 4.23


Calibre is an open source e-book library management application that enables you to manage your e-book collection, convert e-books between different formats, synchronize with popular e-book reader devices, and read your e-books with the included viewer.

It acts as an e-library and also allows for format conversion, news feeds to e-book conversion, as well as e-book reader sync features and an integrated e-book viewer.

Calibre's features include: library management; format conversion (all major ebook formats); syncing to e-book reader devices; fetching news from the Web and converting it into ebook form; viewing many different e-book formats, giving you access to your book collection over the internet using just a browser.

Calibre 4.23 new features:

  • Kobo driver: Add support for new firmware. Also add recognition of 'Kobo Plus' subscription books

  • Edit book: Allow customizing the base background/foreground and link colors for the preview window. Closes tickets: 1889925

  • Quickview panel: Add actions to the context menu to search for book in library, open in viewer, etc. Closes tickets: 1891765

  • Allow forcing calibre to remember the column width for the On device column by right clicking the header of the column

  • Template language: Add functions to perform math operations to convert fractional numbers to integers

Bug fixes

  • Content server: Fix Esc key not working in several views.

  • Closes tickets: 1849958

  • Fix unable to delete default value for custom columns of boolean type, once set Closes tickets: 1889973

  • EPUB Output: When splitting dont consider files with only a single character empty

  • Comments editor: Fix syntax coloring for HTML view in dark mode

  • Book list: When a series column is not wide enough, elide text in the middle so that the series number is visible

Improved news sources

  • El Diplo

  • calibre Blog

  • ESPN

  • LA Times

  • Winnipeg Free Press

  • Popular Science

  • Science News Recent Issues

New news sources

  • and by Volker Heggemann

Download: Calibre 4.23 for Windows | Portable | Windows 64-bit | ~100.0 MB (Open Source)
Download: Calibre 4.23 for MacOS | 160.0 MB
Download: Calibre 4.23 for Linux
View: Calibre Home Page | Calibre Screenshot

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