Calibre 8.13 has officially arrived, bringing several welcome improvements to the popular open-source eBook manager. This version focuses on smoother workflows, better Windows integration, and fixes that directly impact Linux users.
One of the biggest usability changes comes to Virtual Libraries. You can now define search expressions more comfortably using a multi-line edit box, making complex searches much easier to manage. On Windows, Calibre’s “Open With” feature now launches external programs using the system’s API rather than through Calibre itself, improving isolation and reliability when opening files in external apps.
This update also squashes a handful of notable bugs. The “Get books” plugin for ebooks.com now works again, while calibre-server now correctly honors the CALIBRE_OVERRIDE_DATABASE_PATH environment variable. Linux users will be especially pleased with a fix that prevents library exports from breaking when /tmp is mounted in RAM. This is a common configuration across modern Linux distributions. The update also resolves a regression introduced in version 8.11 that caused errors when opening books from full-text search results before searches had completed.
Finally, Calibre’s built-in news fetching service has been improved for Todoist and NZZ sources, giving users more reliable access to updated content.
Calibre 8.13 is available now for Windows, macOS, and Linux at calibre-ebook.com.
