Software Update: Caliber 3.24.2

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A new version of Caliber has been released. Caliber is an open source e-book management program and is available for Windows, Linux, and macOS. Among other things, it can look up all relevant information and cover images, and convert e-books to make them suitable for the various types of e-readers. Furthermore, the program can convert newspapers, magazines and news articles based on RSS feeds into e-book format. Books can also be purchased with Caliber at the well-known web stores. The program is under active development and a new version is usually released every other week on Friday. In version 3.24, the following improvements have been made:

New features

  • Conversion: EPUB Output: Add an option to output EPUB 3 files.
  • PDF Output: Add an option to break long words at the ends of lines. Close tickets: 1773111
  • PDF Output: Allow using images in the header/footer templates.
  • Add an option to use two lines for the text under the toolbar button in Preferences->Look & feel.
  • Edit book: Spell check: Update the number of misspelled words/total words displayed when correcting/ignoring words. Close tickets: 1772276
  • Edit book: Fix HTML: Automatically resolve private entities. Close tickets: 1772157
  • Improve formatting of help in Preferences->Tweaks.
  • ToC Editor: Allow undo for renaming single items as well. Close tickets: 1769442

Bug fixes

  • PDF Output: Strip zero-width space characters from the text as their presence prevents searching from working.
  • DOCX Output: Fix
     tags not being converted correctly.  Close tickets: 1772219
  • DOCX Input: Fix incorrect conversion of a framed block that contains a list. Close tickets: 1771279
  • Conversion: Fix private entities that use the same name as an HTML entity not being handled correctly. Close tickets: 1772157
  • Viewer: Fix HTML files with private entities displaying an artifact at the top. Close tickets: 1772157
  • Edit book: Check book: Show an error for HTML files with private entities. Close tickets: 1772157
  • EPUB3 Input: Fix titlepage being referred to in the nav causing two titlepage entries in the final book.
  • Fix throttle buttons not being perfectly aligned inside toolbars.
  • Quickview: Fix sizes not being displayed. Close tickets: 1772151
  • Edit book: Compress images tool: Do not mark the book as changed if no images could be further compressed.
  • Book list split-view: Fix horizontal scroll position of split view can change when changing the current column in one view.
  • Fix Bookeen Saga not being recognized on macOS/Linux. Close tickets: 1769681
  • Edit metadata dialog: Fix undo last trim not working for automatic trims. Close tickets: 1769606
  • Content server: Fix series field blank in Italian translation.
  • BeautifulSoup: Port fix from upstream for outputting bare ampersands in strings. Close tickets: 1769481
  • calibredb add: Run the input plugins before reading metadata instead of after.
  • Version 3.24.1 fixes a regression in the 3.24 editor that caused syncing between the editor and the Preview panel/Live CSS panel to not work correctly.
  • Version 3.24.2 fixes a bug in the new EPUB 3 output functionality that prevented conversion of non-EPUB 3 books to EPUB 3

New news sources

  • The Federalist by Kovid Goyal

Improved news sources

  • The New York Times Book Review
  • New York Times
  • Le Devoir

Version number 3.24.2
Release status Final
Operating systems Windows 7, Linux, macOS, Windows Vista, Windows 8, Windows 10
Website caliber
File size


License type GPL
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