Calibre 9.13 Update Resolves PDF Bugs for Linux Users

The open‑source e‑book manager Calibre released version 9.13, targeting a series of PDF‑related problems that affected Linux users. The update fixes a conversion error that could occur on distributions with an older libxml2 library—most notably legacy Debian installations—by pre‑loading the required libxml2 version before Qt’s GPU detection interferes.

It also repairs a regression that broke internal PDF links and resolves several issues in Calibre’s content‑server UI, including broken ePub search, missing conversion options, and drag‑and‑drop cover functionality. The release is available for Windows, macOS and Linux via the official website or Flathub.