It has a cornucopia of features divided into the following main categories:
- Library Management
- E-book conversion
- Syncing to e-book reader devices
- Downloading news from the web and converting it into e-book form
- Comprehensive e-book viewer
- Content server for online access to your book collection
What's New
New features
- E-book viewer: Allow searching for nearby words using a new "Nearby words" search mode
- calibredb: New fts_search and fts_index commands to perform full text searching from the command line
- Image viewing popup: Allow zooming using the standard shortcuts of Ctrl+plus/minus. Closes tickets: 1985021
Bug fixes
- Fix a regression in calibre 6.0 that broke remembering the previous sort order for a column
- Fix a regression in calibre 6.0 that broke processing of very high resolution images. Closes tickets: 1983484
- Full text search: Fix error when using restrict searched books and more than 900 books are present in the searched list. Closes tickets: 1983230
- E-book viewer: Fix parsing of CSS styles with @supports rules not working
- E-book viewer: Speed up initial render of books with lots of CSS in <style> tags by not prettying the CSS
- Google books metadata download: Fix paragraphs not being recognized. Closes tickets: 1983126
- Content server: Fix light background for comments editor in dark mode
- Content server: Fix margin and body background color mismatch when reading books with a non-white/black color scheme. Closes tickets: 1985058
- Content server: Fix long tapping in the notes edit area incorrectly changing the highlight extent. Closes tickets: 1983271
- Google search engine: Fix for different URL encoding used by Google servers in Portugal
- Check library: Fix vacuum not running on FTS db
New news sources
- Various Russian and Ukranian news sources by bugmen00t
Improved news sources
- Wirtschaft Woche
- Scientific American
- Popular Science
- Mediapart
- MIT Technology Review
- Indian Express
- Eenadu
