Calibre

Release: 8.9 [22 Aug, 2025]​

New features​

• Annotations browser: Add a color swatch in the results list to make seeing the type of highlight easier
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• Match books in library window: When doing the initial search using the title of the book on the device, if no matches are found remove trailing text in parentheses or after a colon and try again
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• When merging books via drag and drop show the cover of the target book
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• HTMLZ Output: Add support for embedded fonts
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• Plugin installation window: Allow filtering available plugins by category
• Fetch news: Add a sub-menu to the right click menu of the Fetch news button that shows recently downloaded news sources
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Bug fixes​

• Edit book: When pasting text from the clipboard ensure it is normalized to NFC form
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• Content server viewer: Improve the selection dialog for choosing a Text-to-speech voice
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• Content server: Fix an error when editing a book's metadata to change both the cover and another field
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New news sources​

• Startechery by thekabistro

Improved news sources​

• New York Times
• Todoist
• Tagespost

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Calibre 8.10.0​

New features​

• Book list: Allow controlling the tooltips displayed for every column using a template. Right click the column header and choose "Define tooltip template" to set the tooltip for that column
• MTP driver: Allow creating format specific destinations for audiobook files
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• Preferences->Keyboard: Allow searching by shortcut as well as by name

Bug fixes​

• Kindle MTP driver: Fix APNX files being placed in incorrect location when books are sent to subfolders inside the root folder
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• E-book viewer: Read Aloud: Fix regression in previous release that broke changing voices when engine is set to 'Automatically select'
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• Fix a regression in the previous release that broke markdown output
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Improved news sources​

• Harvard Business Review
• Outlook Magazine

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calibre 8.11.0​

• New features:
• E-book viewer: Add an "Ask AI" tab to the dictionary lookup panel. Allows you to query AI about the currently selected text.
• Supports hundreds of AI models via Providers such as Google, OpenRouter, GitHub and locally running models via Ollama. Many of them can be used free of charge. Note that this feature is completely optional and no AI related code is even loaded until you configure an AI provider.
• Preferences: Show the keyboard shortcut for each category in preferences in the tooltip
• Bug fixes:
• E-book viewer: Fix modifying an existing highlight causing duplicates to be created in some books
• E-book viewer: Fix very large e-books sometimes having a few non working links on Windows
• PDB Input: Fix failure to convert some PDB files with sightly malformed headers
• Fix error when trying to add the first icon rule to the Tag browser
• E-book viewer: Fix Esc key not closing footnote popup when the popup has keyboard focus
• E-book viewer: Fix placement of selection handles in some books when modifying an existing highlight
• Windows build: Sign the .pyd DLLs in addition to the .dll DLLs
• Improved news sources:
• New York Times
• Economist
• El Diplo
• New York Review of Books

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calibre 8.11.1​

Calibre 8.16.0​

Release: 8.16 [04 Dec, 2025]​

New features​

• Allow asking AI questions about any book in your calibre library. Right click the "View" button and choose "Discuss selected book(s) with AI"
• AI: Allow asking AI what book to read next by right clicking on a book and using the "Similar books" menu
• AI: Add a new backend for "LM Studio" which allows running various AI models locally

Bug fixes​

• Use a named local timezone for better display of historical dates in the local timezone
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• PDF Input: Fix a regression in the new PDF input engine that caused HTML markup to not be always escaped
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• Get books: Update amazon.it store plugin
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• Fix addition of format specific options when using calibredb catalog with command line flags
• calibredb catalog: Fix generation of language field in BiBTeX catalogs
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• Fix incorrect series index when downloading metadata from amazon.co.jp
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• Fix a regression in the previous release that caused the case change menu to not be present in the comments editor.

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• New features:
• Allow asking AI questions about any book in your calibre library. Right click the "View" button and choose "Discuss selected book(s) with AI"
• AI: Allow asking AI what book to read next by right clicking on a book and using the "Similar books" menu
• AI: Add a new backend for "LM Studio" which allows running various AI models locally
• Bug fixes:
• Use a named local timezone for better display of historical dates in the local timezone
• PDF Input: Fix a regression in the new PDF input engine that caused HTML markup to not be always escaped
• Get books: Update amazon.it store plugin
• Fix addition of format specific options when using calibredb catalog with command line flags
• calibredb catalog: Fix generation of language field in BiBTeX catalogs
• Fix incorrect series index when downloading metadata from amazon.co.jp
• Fix a regression in the previous release that caused the case change menu to not be present in the comments editor.
• Fix a bug in 8.16.0 that prevented the Ask AI what to read next feature from working
• Fix a crash in 8.16.0 that caused using the "Close" button in Ask AI to crash calibre on some systems

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calibre 9.0.0​

• New features:
• A new Bookshelf view with your books arranged on shelves showing their spines.
• Click the Layout button in the bottom right corner of the calibre window to switch to Bookshelf view.
• Viewer: Add an "Edit book" button to the viewer controls to edit the current book when the current book is in an editable format such as EPUB, AZW3 or KEPUB. It opens the editor at the approximate location that is currently being viewed.
• Linux: Add momentum based scrolling for the book list when using high resolution scroll devices like touchpads
• TXT Output: Add an option to replace images by their alt attribute text
• EPUB: Support reading cover images from so called "Open Manga Format" non-conformant EPUB files produced by some Japanese publishers.
• Add a tweak to change the font size of the AI chat widget
• E-book viewer: Allow typing in a page number to go to instead of forcing the user to scroll through existing page numbers
• Kobo driver: Support for updated firmware
• Bug fixes:
• KEPUB Output: Add some CSS to fix rendering of tate-chu-yoko text on Kobo devices
• Only show the Sort button on the search bar if the Sort By action has not been added to the search bar by the user
• EPUB3 metadata: Handle identifiers that use HTTP URLs without the url: prefix
• Edit book: Check book: Fix spurious unreferenced warnings for SMIL media overlay audio files
• Edit book: Reports: Have pressing enter do the same action as double clicking the current entry
• E-book viewer: Improve export of SVG images
• Disable GPU acceleration for Qt WebEngine by default to prevent crashes on some older systems. Can be re-enabled via Preferences->Tweaks
• Speedup calibre shutdown time by a couple of seconds
• Improved news sources:
• Times Literary Supplement
• Private Eye
• New Yorker

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calibre 9.1.0​

Nitrogene napisał:

Ostatnio coś niedobrego dzieje się z Calibre. Wersja dla Linux uszkadzała mi bazę ebooków a wersja dla MacOS spuchła i zajmuje 1,14 GB (sama aplikacja). Do tego przechowuje binaria dla starych Maców z procesorem Intel jednocześnie z nowymi dla Apple Silicon. Jeśli program dalej będzie tak puchł, to trzeba będzie poszukać alternatywy.

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