Calibre is a complete e-book library manager. Organize your collection, convert your books to multiple formats, and sync with all of your devices. Let Calibre be your multi-tasking digital librarian.

Manage, convert, sync, and more

• Library management. Calibre keeps things orderly by creating single entries for books that contains multiple formats. Add tags and comments for better searchability.
• Format conversion. Calibre's robust conversion options support a wide variety of file formats.
• File syncing. Calibre's device drivers seamlessly support all the top e-readers and devices.

What's New:

Version 5.23.0:

New features:

• Annotations browser: Show highlight color in the preview panel
• TXTZ format: Store type of text formatting in the metadata and use it automatically when converting from TXTZ
• Edit metadata dialog: Allow holding Ctrl and clicking the item editor buttons to instead open the manage dialog

Bug fixes:

• Annotations browser: Fix searching for words in languages such as Chinese that do not have word delimiters not working
• News download: Fix URLs with spaces in them not being downloaded since calibre 5.0
• When searching for books by an author from the manage authors dialog, use exact matches
• MOBI Output: Fix invalid color specification as plain numbers causing conversion to fail
• MOBI Output: Fix invalid text indent specification causing conversion to fail
• Linux: Drop the unmaintained dbus-python in favor of jeepney for DBUS
• Edit book: Workaround for Qt bug that caused the panel sizes in the editor to not be remembered across sessions

Improved news sources:

• The Guardian and the Observer
• National Geographic
• Handelsblatt
• Huffington Post

Screenshots:

• 
• 
•