Calibre 9.9 released with improved EPUB page counting, Fedora 44 SSL fix, and more

Calibre 9.9 adds search persistence in virtual libraries, better EPUB page counting, improved ISBN parsing, and WolneLektury updates.

A new version of Calibre, version 9.9, is now available for download. Let's take a look at everything that's new in this release.

For users who maintain a lot of virtual libraries, there is now the option to retain the current search query when switching between tabs, a configuration found under the searching preferences.

The update also brings more accurate page counting of fixed-layout EPUB files to help populate the pages column, and the metadata downloader will now ignore spacing around the colon separator when you paste an ASIN or ISBN from your clipboard.

The bug fixes in this release include a fix for SSL certificate loading on the recently released Fedora 44. In addition to that, the internal e-book viewer no longer suffers from incorrect search match offsets when scanning text with non-BMP Unicode characters.

The bulk metadata dialog now allows the backspace key to function in number input boxes even when set to undefined, and the content server now properly applies null metadata when serving book files.

Calibre is a very powerful open-source suite of e-book management tools that has been around since 2006, when creator Kovid Goyal first released it as libprs500. Since then, it has grown to support features like a built-in editor and a versatile e-book viewer. Millions of active readers rely on the platform to sort, tag, categorize, and build virtual libraries that span thousands of books. Users can also convert e-books to and from almost every format in existence (EPUB, MOBI, AZW3, PDF, TXT, KEPUB, etc.)

This year, so far, has seen the addition of new features like an all-new "Bookshelf" view (version 9.0) that arrived in January. This layout simulates a physical wooden bookshelf with rows of books displaying their spines, complete with adjustable fonts and dynamic spine widths that reflect actual page counts.

There is also now an (opt-in) AI module that lets you right-click any item to select "Discuss selected book with AI". This chat system connects to popular cloud providers (like OpenAI) or runs entirely locally using offline AI models (via LM Studio or similar OpenAI-compatible local providers).

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Posted Saturday 30 May 2026 at 7:52 am AEST (my time).

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