Download Caliber 6.17

Version 6.17 of Caliber has been released. This open source e-book management tool is available for Windows, Linux, and macOS. It can, among other things, look up all relevant information and cover images, and convert e-books to make them suitable for various types of e-readers. Furthermore, the program can convert newspapers, magazines and news articles into e-book format based on RSS feeds. Books can also be purchased with Caliber from well-known online stores.

In version 6.0 the switch to Qt 6 has been made, among other things. However, this does mean that the program only works on computers equipped with a 64bit processor and requires at least Windows 10 or macOS 11. Furthermore, you can now 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 update:

New features

• Font subsetting: Add support for WOFF format fonts and CID keyed fonts. Also further reduce file sizes when subsetting.
• Book details: Show a link to open the data files folder when data files are present.
• Template language: Add various functions to query the extra files associated with a book.
• Edit book: Compress images: Support compression of images in the WEBP format as well. Closes tickets: 2017195.
• Comments editor: Add buttons to create links to data files and also to folders easily when inserting a link.
• Allow displaying the id, formats and path builtin columns via Preferences->Add your own columns.
• Trash bin: Add a button to clear the bin. Closes tickets: 2017232.
• Metadata editor: Use a dedicated editor with preview for custom columns that store markdown formatted text.

Bug fixes

• Fix a regression in the previous release that could result in empty author folders remaining in the library when the author of a book is changed.
• Fix the data files associated with a book not being handled when using the Merge books and Copy to library functions. Closes tickets: 2017373.
• Fix a regression in the previous release that broke some operations in the Manage tags/authors/etc. dialogues.
• Ensure metadata.opf is always written when deleting book even if it is not sequenced for backup.Closes tickets: 2017217.

Improved news sources

• Scientific American