Software Update: Caliber 6.4.0

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Version 6.4.0 of Caliber has been released. This open source ebook manager 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 from the well-known webshops.

In version 6.0 among other things, the switch to Qt 6 has been made. However, this means that the program only works on computers equipped with a 64-bit processor and a minimum of Windows 10 or macOS 11 is required. Furthermore, it is now possible to search all books in the library instead of just the current book, and there are also versions for Arm and Apple Silicon processors. The following changes and improvements have also been made in this fourth update:

New features

  • Conversion pipeline: Add support for !important when flattening CSS rules. Close tickets: 1987011
  • Content server: Use the chapter title as the base bookmark name when creating new bookmarks. Close tickets: 1986786
  • Allow changing the search order when clicking on items in the Tag browser (Preferences->Look & feel->Tag browser->Hierarchy and searching)
  • Check library: Make vacuuming the full text database optional as it is very slow and memory intensive. Close tickets: 1986500
  • Tag browser: Move the preferences for controlling the order and display of categories in the Tag browser from Preferences->Tweaks to Preferences->Look & feel->Tag browser. Close tickets: 1987235
  • User category editor: Hide items not visible in the Tag browser. Close tickets: 1984121
  • Allow adding a button to show the Manage categories window to the toolbars via Preferences->Toolbars & menus
  • Google metadata download: When excluding results from a web search because they don’t match the specified title/author ignore diacritics, accents, etc.

Bug fixes

  • E-book viewer: Lookup: Google dictionary: Add some padding at the left and right margins. Close tickets: 1986963
  • E-book viewer: Lookup word in Google dictionary: Fix meanings of some words not being shown in the user’s preferred language. Close tickets: 1985855
  • Fix calibredb backup_metadata –all operating only on dirty books not all books. Close tickets: 1987390
  • Do not VACUUM FTS db when exporting library as it can be very slow. Close tickets: 1987557
  • Windows: Nicer error message when attempting to run viewer/editor on machine without MediaPack installed
  • Edit book: Reports: Fix rendering of images in the images report table
  • Content server: Fix formatting of dates for custom columns using ISO format. Close tickets: 1986412

New news sources

  • Brhat by Vishwas Vasuki
  • Cachys Blog by Volker Heggemann
  • Various Russian and Ukrainian news sources by bugmen00t

Improved news sources

  • Live Law and Live Mint
  • Financial Times and MIT Technology Review
  • Business Standard and Indian Express
  • Nautilus
  • High Country News
  • Outlook Business Magazine

Version number 6.4.0
Release status Final
Operating systems Linux, macOS, Windows 10, Windows 11
Website caliber
License type GPL
AppleBlogBusinessCaliberCSSdbGoogleIndianISOLinuxmacOSMITQtRSSRussianSoftwareWindowsWindows 10