calibre

Release: 8.16.2 [04 Dec, 2025]
Fix a crash in 8.16.0 that caused using the "Close" button in Ask AI to crash calibre on some systems
Closes tickets: 2133992
Allow asking AI questions about any book in your calibre library. Right click the "View" button and choose "Discuss selected book(s) with AI" [8.16.2]

Release: 8.16.1 [04 Dec, 2025]
Fix a bug in 8.16.0 that prevented the Ask AI what to read next feature from working
Closes tickets: 2133932
Allow asking AI questions about any book in your calibre library. Right click the "View" button and choose "Discuss selected book(s) with AI" [8.16.1]

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
Closes tickets: 2133435
PDF Input: Fix a regression in the new PDF input engine that caused HTML markup to not be always escaped
Closes tickets: 2133846
Get books: Update amazon.it store plugin
Closes tickets: 2132253
Fix addition of format specific options when using calibredb catalog with command line flags
calibredb catalog: Fix generation of language field in BiBTeX catalogs
Closes tickets: 2133134
Fix incorrect series index when downloading metadata from amazon.co.jp
Closes tickets: 2132182
Fix a regression in the previous release that caused the case change menu to not be present in the comments editor.
calibredb list: Fix identifier values not being shown
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Release: 8.15 [21 Nov, 2025]
New features
E-book viewer: Highlights panel: Show the date for highlights in the tooltip when hovering over a highlight
Closes tickets: 2131619
Comments editor: When changing case preserve as much text formatting as feasible
Comments editor: Add shortcuts for case change operations. Select some text, right click and see the case change menu for the shortcuts
Closes tickets: 2131158
Bug fixes
Editing book list: Be robust against the book list changing in the background when a book is auto added or similar while a cell is being edited
Closes tickets: 2131622
Edit book: Fix a memory leak in the HTML syntax highlighter
Closes tickets: 2130880
calibredb list: Fix identifier values not being shown. Fixes #2131557
New news sources
Hack a Day by Rui Rebelo
Improved news sources
Guardian

Release: 8.14 [07 Nov, 2025]
New features
Tolino driver: Add support for latest firmware
When showing completions for languages show all languages that contain the typed in string instead of only languages that start with the typed in string
Closes tickets: 2130804
When showing completions in substring match mode, order the completions by how close to the start the query is
A new shortcut Ctrl+Alt+Shift+P to switch to the previously applied Virtual library
Closes tickets: 2127819
Bug fixes
FB2 Input: Fix a remote code execution vulnerability from maliciously crafted FB2 files
Closes tickets: 2130764
E-book viewer: Ignore soft hyphens when looking up words
Closes tickets: 2130603
Catalog export: Fix export of languages in BibTeX format
Closes tickets: 2130573
Windows: Fix Open With not working with Microsoft Paint
Closes tickets: 2128853
Improved news sources
Harper's Magazine
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Release: 8.13 [18 Oct, 2025]
New features
Virtual libraries: Allow defining their search expressions more comfortably in a multi-line edit box
Closes tickets: 2126881
Open with: On Windows launch the specified program via the windows API for executing programs to decouple it more thoroughly from the calibre environment
Bug fixes
Get books: Fix ebooks.com plugin
calibre-server: Fix CALIBRE_OVERRIDE_DATABASE_PATH not working
Export library: Dont use /tmp on Linux fixes export breaking with large FTS database on Linux distros that mount /tmp in RAM
Fix a regression in 8.11 that caused errors when trying to open a book from the full text search results while the search was still running
Closes tickets: 2126611
Improved news sources
Todoist
NZZ

Release: 8.12 [01 Oct, 2025]
New features
Tolino driver: Support for latest Tolino firmware 5.11.230427
Ollama AI: Allow setting arbitrary HTTP headers to send with every request
Bug fixes
Fix a regression in the previous release that broke conversion of HTML that does not parse as XHTML
Closes tickets: 2126569
Ollama AI: Fix configuration of custom URL not working

Release: 8.11.1 [26 Sep, 2025]
Windows: Fix regression in (8.11.0) causing conversion to be broken when metadata contains non-BMP characters
Closes tickets: 2125742
E-book viewer: Add an "Ask AI" tab to the dictionary lookup panel. Allows you to query AI about the currently selected text. [8.11.1]

Release: 8.11 [26 Sep, 2025]
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.
Preferences: Show the keyboard shortcut for each category in preferences in the tooltip
Closes tickets: 2122257
Bug fixes
E-book viewer: Fix modifying an existing highlight causing duplicates to be created in some books
Closes tickets: 2122747
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
Closes tickets: 2123829
Fix error when trying to add the first icon rule to the Tag browser
Closes tickets: 2125438
E-book viewer: Fix Esc key not closing footnote popup when the popup has keyboard focus
Closes tickets: 2041848
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
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Release: 8.10 [05 Sep, 2025]
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
Closes tickets: 2121304
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
Closes tickets: 2121737
E-book viewer: Read Aloud: Fix regression in previous release that broke changing voices when engine is set to 'Automatically select'
Closes tickets: 2121897
Fix a regression in the previous release that broke markdown output
Closes tickets: 2121701
Improved news sources
Harvard Business Review
Outlook Magazine

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
Closes tickets: 2109496
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
Closes tickets: 2117322
When merging books via drag and drop show the cover of the target book
Closes tickets: 2118371
HTMLZ Output: Add support for embedded fonts
Closes tickets: 2120726
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
Closes tickets: 2119557
Bug fixes
Edit book: When pasting text from the clipboard ensure it is normalized to NFC form
Closes tickets: 2099740
Content server viewer: Improve the selection dialog for choosing a Text-to-speech voice
Closes tickets: 2109789
Content server: Fix an error when editing a book's metadata to change both the cover and another field
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