Calibre Release History
Calibre release history with versions, dates, official source links, package notes, and concise changelog details.
This page records structured version coverage from official project sources. Full upstream changelog text is not mirrored unless the project license or source terms clearly allow it; each entry links to the official source for complete release notes.
For current package filenames and platform choices, use the current Calibre page. For archived package inventory, use the old Calibre versions page.
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Calibre 9.9
Release date: .
Official source: release notes.
- New features: A new option to keep the current search when switching Virtual libraries under Preferences->Searching
- New features: Pages column: Add support for accurate page counting of fixed layout EPUB files
- New features: Add from ISBN: Ignore space around the colon used to separate identifier type from value
- New features: Get books: Update and improve the WolneLektury store
- Bug fixes: E-book viewer: Fix incorrect search match offsets in normal search mode when the text contains non-BMP Unicode characters
- Bug fixes: Content server: Apply null metadata when serving book files. Matches behavior of save to disk
- Bug fixes: Linux: Fix SSL certificate loading not working on Fedora 44
- Bug fixes: Bulk metadata dialog: Fix backspace key not working in number input boxes when set to Undefined
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Calibre 9.8
Release date: .
Official source: release notes.
- New features: Content server: In the /mobile view allow clicking on book titles/covers to see book details
- New features: Edit book: Allow reset of zoom to 100% by right clicking in the preview panel
- New features: macOS Tahoe: Have the calibre app icon automatically use a dark look when the system is in dark mode
- New features: AI: Support for arbitrary local providers that export an OpenAI compatible interface
- New features: Allow auto closing calibre after running jobs complete when an attempt to close calibre is made while there are running jobs
- Bug fixes: Native TTS engine: Normalize text to NFKC so that word tracking works when the native engine reports spoken word with different normal form
- Bug fixes: When converting GIF images to PNG workaround bug in PIL causing exception when checking if the GIF is animated
- Bug fixes: Preserve existing conversation with AI when there is an error talking to it
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Calibre 9.7
Release date: .
Official source: release notes.
- New features: Annotations browser: Allow grouping results by any field
- New features: E-book viewer: Handle native pinch to zoom gesture on touchpads the same as the pinch to zoom on touchscreens. Default action is to change font size.
- New features: Content server: Implement full offline mode when using HTTPS connections to the content server
- Bug fixes: E-book viewer: Fix a regression in the previous release that caused annotations/last read information to not be saved in e-book files
- Bug fixes: AI: Make the GitHub backend a bit more robust
- Bug fixes: AI: OpenRouter backend: Fix reasoning level "auto" disabling all reasoning
- Bug fixes: Content server: Read book: Fix regression causing error during searching
- Bug fixes: Content server: Fix opening results from full text search not working
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Calibre 9.6
Release date: .
Official source: release notes.
- New features: Full text search: A new cards based view of full text search results with book covers
- New features: A new "word-prefix" completion mode that shows matches that have any word starting with the typed in letters
- New features: Bookshelves: Add option to have the height of books be constant per group
- New features: Edit book: File list: Allow using Ctrl+Shift+Left/Right to move an item to top/bottom of the list
- Bug fixes: Fix notes being lost when changing the lookup name of custom column
- Bug fixes: E-book viewer: Fix using the slower/faster buttons causing a chapter skip when using the Piper neural speech backend
- Bug fixes: Content server viewer: Fix annotations being not synced to the server in some Android devices when using the Firefox browser
- Bug fixes: Windows: Force kill calibre.exe on quit to workaround hang in interpreter shutdown on some systems
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Calibre 9.5
Release date: .
Official source: release notes.
- New features: Allow creating a column to display reading progress
- New features: Annotations browser: Allow filtering by highlight style
- New features: E-book viewer: Add an option to display the pages from the paper book page list (when available) while also showing the last page number
- New features: Edit book: Add a tool to remove unused images, similar to the tool to remove unused CSS
- New features: Tolino driver: support new firmware version
- New features: E-book viewer: Add a reset button to the reading stats panel
- Bug fixes: Fix overridden icons from config directory not switching between dark/light variants on theme change
- Bug fixes: Fix: Use MOBI fallback for KFX format when downloading news periodicals
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Calibre 9.4
Release date: .
Official source: release notes.
- New features: E-book viewer: Add "reading stats" to show reading progress
- New features: Edit book: Nicer UI for changing the entries in the insert tag menu
- New features: Cover grid: Option to draw emblems on top of cover in Preferences->Look & feel->Cover grid->Emblems
- New features: Cover grid: Add option to draw text flush with bottom of rendered cover
- Bug fixes: DOCX Input: Fix paragraph/list margins in documents created by LibreOffice that do not have Word 2007 compatibility
- Bug fixes: ODT Input: Fix a regression in the previous release that broke conversion of images
- Bug fixes: Content server: When banning IPs for repeated login is enabled, only use the IP address not any HTTP headers as the ban key (CVE-2026-27824)
- Bug fixes: Content server: Sanitize content disposition received as query parameter (CVE-2026-27810)
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Calibre 9.3.1
Release date: .
Official source: release notes.
- New features: Windows installer: Detect running calibre processes and ask user to shutdown calibre before proceeding with installation to avoid reboots post installation
- New features: Improve Preferences->Tweaks getting rid of the need for double apply
- New features: KEPUB Output: When converting to KEPUB preserve cover aspect ratio regardless of the setting for it in the EPUB Output to match the behavior of KEPUB files from Kobo
- Bug fixes: Make the new pages column value available in save to disk/send to device templates
- Bug fixes: Hanvon N10 device driver: Fix calibre unable to put its metadata files onto the device
- Bug fixes: Amazon metadata download plugin: Fix incorrect series index from amazon.com
- Bug fixes: Fix a regression in calibre 9.0 that broke output to PDB/TCR/zTXT files
- Bug fixes: Windows: Fix calibre not exiting on quit when the wireless device driver is used in calibre 9
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Calibre 9.2.1
Release date: .
Official source: release notes.
- New features: ZIP Output: Change the template engine used for HTML templating from templite to Mustache, for greater safety and performance. Note that this is a breaking change if you use custom templates with ZIP output (CVE-2026-25731)
- New features: Check library: Add an option to rebuild the annotations search index
- Bug fixes: CHM Input: Ignore internal files that have paths that end up outside the container. Prevents path traversal attacks with malicious CHM files (CVE-2026-25635)
- Bug fixes: EPUB Input: Ensure font obfuscation processing happens only on files from the EPUB, preventing path traversal attacks from malicious EPUB files (CVE-2026-25636)
- Bug fixes: Windows: Workaround for bug in Qt 6.10 causing Read Aloud in the E-book viewer to crash when stopped and restarted
- Bug fixes: Fix drag and drop of books into bookshelf view not working
- Bug fixes: Bookshelf: Fix bookshelf view blank on some macOS systems
- Bug fixes: E-book viewer: Fix a regression in calibre 9.0 that broke the Go to page function
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Calibre 9.1
Release date: .
Official source: release notes.
- New features: This is a pure bugfix release fixing various regressions in calibre 9.0
- Bug fixes: macOS: Fix crash when pasting cover image
- Bug fixes: Fix restore database not working
- Bug fixes: Windows: Fix the Read Aloud feature in the E-book viewer not working when using the Piper engine
- Bug fixes: Fix using icon themes in "For dark and light" mode not working
- Bug fixes: Fix covers in the Cover grid slightly stretched on high DPI screens
- Bug fixes: Amazon metadata download: Fix publication date not being retrieved from amazon.co.jp
- Improved news sources: Economist
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Calibre 9.0
Release date: .
Official source: release notes.
- New features: A new Bookshelf view with your books arranged on shelves showing their spines
- New features: Viewer: Add an "Edit book" button to the viewer controls to edit the current book
- New features: Linux: Add momentum based scrolling for the book list when using high resolution scroll devices like touchpads
- New features: TXT Output: Add an option to replace images by their alt attribute text
- New features: EPUB: Support reading cover images from so called "Open Manga Format" non-conformant EPUB files produced by some Japanese publishers.
- New features: Add a tweak to change the font size of the AI chat widget
- New features: E-book viewer: Allow typing in a page number to go to instead of forcing the user to scroll through existing page numbers
- New features: Kobo driver: Support for updated firmware
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Calibre 8.16.2
Release date: .
Official source: release notes.
- 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"
- New features: AI: Allow asking AI what book to read next by right clicking on a book and using the "Similar books" menu
- New features: AI: Add a new plugin 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
- Bug fixes: PDF Input: Fix a regression in the new PDF input engine that caused HTML markup to not be always escaped
- Bug fixes: Get books: Update amazon.it store plugin
- Bug fixes: Fix addition of format specific options when using calibredb catalog with command line flags
- Bug fixes: calibredb catalog: Fix generation of language field in BiBTeX catalogs
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Calibre 8.15
Release date: .
Official source: release notes.
- New features: E-book viewer: Highlights panel: Show the date for highlights in the tooltip when hovering over a highlight
- New features: Comments editor: When changing case preserve as much text formatting as feasible
- New features: Comments editor: Add shortcuts for case change operations. Select some text, right click and see the case change menu for the shortcuts
- 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
- Bug fixes: Edit book: Fix a memory leak in the HTML syntax highlighter
- Bug fixes: calibredb list: Fix identifier values not being shown
- New news sources: Hack a Day by Rui Rebelo
- Improved news sources: Guardian
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Calibre 8.14
Release date: .
Official source: release notes.
- New features: Tolino driver: Add support for latest firmware
- New features: 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
- New features: When showing completions in substring match mode, order the completions by how close to the start the query is
- New features: A new shortcut Ctrl+Alt+Shift+P to switch to the previously applied Virtual library
- Bug fixes: FB2 Input: Fix a remote code execution vulnerability from maliciously crafted FB2 files
- Bug fixes: E-book viewer: Ignore soft hyphens when looking up words
- Bug fixes: Catalog export: Fix export of languages in BibTeX format
- Bug fixes: Windows: Fix Open With not working with Microsoft Paint
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Calibre 8.13
Release date: .
Official source: release notes.
- New features: Virtual libraries: Allow defining their search expressions more comfortably in a multi-line edit box
- New features: 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
- Bug fixes: calibre-server: Fix CALIBRE_OVERRIDE_DATABASE_PATH not working
- Bug fixes: Export library: Don't use /tmp on Linux fixes export breaking with large FTS database on Linux distros that mount /tmp in RAM
- Bug fixes: 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
- Improved news sources: Todoist
- Improved news sources: NZZ
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Calibre 8.12
Release date: .
Official source: release notes.
- New features: Tolino driver: Support for latest Tolino firmware 5.11.230427
- New features: 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
- Bug fixes: Ollama AI: Fix configuration of custom URL not working
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Calibre 8.11.1
Release date: .
Official source: release notes.
- 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.
- New features: 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
- Bug fixes: E-book viewer: Fix very large e-books sometimes having a few non working links on Windows
- Bug fixes: PDB Input: Fix failure to convert some PDB files with sightly malformed headers
- Bug fixes: Fix error when trying to add the first icon rule to the Tag browser
- Bug fixes: E-book viewer: Fix Esc key not closing footnote popup when the popup has keyboard focus
- Bug fixes: E-book viewer: Fix placement of selection handles in some books when modifying an existing highlight
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Calibre 8.10
Release date: .
Official source: release notes.
- 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
- New features: MTP driver: Allow creating format specific destinations for audiobook files
- New features: 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
- Bug fixes: E-book viewer: Read Aloud: Fix regression in previous release that broke changing voices when engine is set to 'Automatically select'
- Bug fixes: Fix a regression in the previous release that broke markdown output
- Improved news sources: Harvard Business Review
- Improved news sources: Outlook Magazine
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Calibre 8.9
Release date: .
Official source: release notes.
- New features: Annotations browser: Add a color swatch in the results list to make seeing the type of highlight easier
- New features: 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
- New features: When merging books via drag and drop show the cover of the target book
- New features: HTMLZ Output: Add support for embedded fonts
- New features: Plugin installation window: Allow filtering available plugins by category
- New features: Fetch news: Add a sub-menu to the right click menu of the Fetch news button that shows recently downloaded news sources
- Bug fixes: Edit book: When pasting text from the clipboard ensure it is normalized to NFC form
- Bug fixes: Content server viewer: Improve the selection dialog for choosing a Text-to-speech voice
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Calibre 8.8
Release date: .
Official source: release notes.
- New features: E-book viewer: Improve display of Lookup results from Google
- New features: Kobo driver: Add support for latest Tolino firmware
- New features: Conversion: Handle -epub-text-emphasis properties used in some Japanese language EPUB books
- New features: Piper Neural text to speech engine: re-write the backend used to run the Piper speech models to no longer need an external binary for improved performance and robustness
- Bug fixes: Edit book: Reports: Fix sorting by name of CSS rules
- Bug fixes: Fix template based custom column of tags type not being treated as multi valued when using it for similarity searches
- Bug fixes: When adding books recursively do not try to import folder whose names named with an ebook file extension. These are, for example, generated by Apple Books
- Bug fixes: EPUB3 Output: Fix various issues with processing nav files when they contain more than just the Table of Contents and are not included in the spine.
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Calibre 8.7
Release date: .
Official source: release notes.
- New features: Kindle driver: Add support for generating page number files (APNX) on 2024 and newer MTP based Kindles
- New features: When finding similar books by author ignore "et al." suffix on author names
- Bug fixes: Fix a regression in the previous release that broke configuring Sending of books to device
- Bug fixes: Kobo driver: Fix a regression that caused ancient, pre-Touch kobo devices to no longer work with calibre
- Bug fixes: MTP driver: Workaround for LibMTP no longer returning device serial numbers on some systems
- Bug fixes: Edit book: Fix the next/previous buttons in the Text search tool not working
- Bug fixes: Fix series and publisher mapping rules not handling commas correctly when downloading metadata one book at a time
- Bug fixes: Edit metadata dialog: When there are only a few custom comments like fields stretch them vertically to take up unused space
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Calibre 8.6
Release date: .
Official source: release notes.
- New features: Content server: Add a checkbox in content server user preferences to prevent a user account from changing its own password via the web interface
- New features: Restoring database: Improve performance by an order of magnitude
- New features: Add a tweak to Preferences->Tweaks to permit displaying the sort value for series in the Tag browser
- New features: Welcome wizard: Change default output format to AZW3 for Kindle as MOBI is obsolete and all Kindles released within the last decade plus support AZW3
- New features: Add 'Search "not in"' and 'Filter "not in'" buttons to Manage authors and Manage Items
- Bug fixes: Windows: Fix a regression in the previous release that caused terminal windows to popup momentarily when adding PDF files or converting them
- Bug fixes: E-book viewer: Fix a regression in 8.4 that broke fading of the background image
- Bug fixes: Tag browser: Fix clicking on categories to search for books by first letter of series not working correctly for non-English language books
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Calibre 8.5
Release date: .
Official source: release notes.
- New features: The scrollbars used in calibre in light mode are now the same style as the ones in dark mode, this improves the contrast making the scrollbar more accessible
- New features: Kobo driver: add an option to change how the Kobo displays series numbers using a template.
- New features: Manage data files dialog: Add a button to cancel remaining books when managing multiple books
- New features: Kobo driver: add support for new Tolino firmware
- Bug fixes: Prevent Windows 11 from starting a conhost.exe process for every calibre worker process
- Bug fixes: E-book viewer: Improve highlight grouping with recurring chapter names
- Bug fixes: When sending emails to amazon and pocketbook use random English text instead of UUIDs for subject/body.
- Improved news sources: NYTimes
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Calibre 8.4
Release date: .
Official source: release notes.
- New features: KEPUB Output: Add an option to generate KEPUB files that have better text justification at the cost of gaps in highlighting when used on the Kobo
- New features: E-book viewer: Allow the background image specified in the Style section of the viewer preferences to extend under the page margins as well
- Bug fixes: E-book viewer: Fix a regression that broke the "show book in main calibre program" link
- Bug fixes: News download: Fix Next/Previous links not working when the pointed to article failed to download
- Bug fixes: E-book viewer: Handle links to missing internal files with an error popup rather than becoming non-functional
- Bug fixes: E-book viewer: Fix some links not being processed correctly for very large EPUB files with many internal HTML files
- Bug fixes: Get books: Update ebooks.com plugin for website changes
- Bug fixes: Metadata review dialog: Fix merging of tags not working correctly
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Calibre 8.3
Release date: .
Official source: release notes.
- New features: Cover grid: Allow configuring different backgrounds for light and dark mode in Preferences->Look & feel->Cover grid
- New features: E-book viewer: Further speedup first open of large EPUB files by another 30%
- New features: Metadata review dialog: Add merge comments action
- Bug fixes: Kobo driver: Fix viewing of KEPUB files from the device view in calibre not working
- Bug fixes: Fix a regression in 8.1 that broke displaying of the debug log when running in debug mode
- Bug fixes: E-book viewer: Fix a regression in 8.0 that caused the clock to display an extra p after the time
- Improved news sources: GoComics
- Improved news sources: Internazionale
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Calibre 8.2.1
Release date: .
Official source: release notes.
- New features: Kobo driver: Add support for new Tolino firmware
- New features: Kindle driver: Allow using a value of * in Preferences->Output options->MOBI Output to have the driver mark all books sent to the device as personal documents
- Bug fixes: Kobo driver: Fix hyphenation and extra CSS added to KEPUB files being ignored by the renderer on the Kobo
- Bug fixes: macOS: Fix opening book folder or PDF files for books with square brackets in the title not working
- Bug fixes: Quickview: Fix a long standing bug with syncing of columns in the presence of hidden/re-ordered columns
- Bug fixes: E-book viewer: Show an error message when an invalid nearby search expression is used
- Bug fixes: KEPUB Output: Fix incorrect encoding detection for some HTML files without an encoding declaration
- Bug fixes: macOS: Fix a regression in the previous release that caused failures in the E-book viewer when updating annotations for books with a large number of annotations
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Calibre 8.1.1
Release date: .
Official source: release notes.
- New features: Edit metadata dialog: Allow right clicking on the cover to edit it with an external program
- New features: Virtual library tabs: When the tabs are locked prevent them from being re-ordered as well
- New features: FreeBSD: Add support for connecting to devices, contributed by Guido Falsi
- Bug fixes: macOS: Fix regression in previous release that caused calibre:// URLs to no longer work
- Bug fixes: macOS: Fix a regression in calibre 8 that prevented icons in menus from being rendered
- Bug fixes: Kobo driver: Fix hyphenation settings not being applied correctly when generating KEPUB to put on the device
- Bug fixes: KEPUB Output: Include leading whitespace in kobo sentence span tags. This prevents unsightly breaks when highlighting across formatted text on the Kobo
- Bug fixes: Content server: Fix FB2 books not readable via the in-browser viewer
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Calibre 8.0.1
Release date: .
Official source: release notes.
- New features: Much improved Kobo support
- New features: Connect to folder: Allow connecting a specific device
- New features: When completing names for fields that contain hierarchical data in prefix mode match prefixes after every period
- New features: ToC editor: Allow moving of multiple selected items in the Table of Contents
- New features: macOS: The calibre application icons in the dock are now displayed in a white frame to follow Apple's current recommended icon style
- New features: Kobo driver: Add support for new firmware on Tolino devices
- New features: Book details: Add option in to suppress author search links
- Bug fixes: Fix a regression that broke tabbing to edit cells in the book list when some columns have been hidden or re-ordered
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Calibre 7.26
Release date: .
Official source: release notes.
- New features: Allow specifying web search links that are used when clicking on item names in the Book details panel for custom columns via Preferences->Add your own columns
- New features: Content server: When clicking on author names in the book details page perform the same action as clicking it in the calibre program's Book details panel
- Bug fixes: Fix a regression in 7.17 that caused various minor problems with editing metadata directly in the book list
- Bug fixes: Fix a regression in the previous release that broke conversion using Heuristics and TXT input documents
- Bug fixes: E-book viewer: Fix header/footer text size too small when using multiple monitors and the primary monitors DPI is much less than secondary monitor DPI
- Bug fixes: Fix series mapping rules in the metadata preferences not working
- Bug fixes: Fix setting custom icon for category doesn't work
- Bug fixes: Kobo driver: Fix a regression that broke working with very old Kobo devices
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Calibre 7.25
Release date: .
Official source: release notes.
- New features: Allow setting custom icons for items in the Tag browser by right clicking on them and choosing "Manage icon for this value"
- New features: Kindle driver: Allow import of KFX files from 2024 Kindles that use the MTP protocol
- New features: A new tweak in Preferences->Tweaks to control the East Asian language used when transliterating to English
- New features: Add an option to adjust the size of the link and note icons in Book details under Preferences->Look & feel->Book details
- Bug fixes: Nook driver: Fix the Glowlight 4 not working on Windows
- Bug fixes: MTP driver: Fix Internal storage and SD card being swapped on some devices that have buggy firmware that assigns the SD card a lower id than the internal storage
- Bug fixes: Template dialog: Respect the tweak for title/series when editing save to disk and send to device templates
- Bug fixes: Content server: Fix icons for individual formats not being shown in the Tag browser
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Calibre 7.24
Release date: .
Official source: release notes.
- New features: Allow creating rules to transform series names in the Bulk metadata editor and Preferences->Metadata download
- New features: Conversion: Automatically set the page progression direction for books that do not have it set and have their primary language either Arabic or Hebrew
- New features: Content server: Book details view: Make calibre://show-book and calibre://view-book URLs in the comments work
- New features: Edit book: Spell check: Add a button to export the currently displayed list of words as a CSV file
- New features: Add from ISBN: Add a checkbox to automatically convert obsolete ISBN 10 to ISBN 13
- New features: Save single format to disk: Allow choosing the book cover as the format to save
- New features: Option to show a button to access all available actions from the status bar in Preferences->Look & feel->Main interface
- Bug fixes: Read aloud: Fix no audio produced when text contains <3 and using the Windows legacy speech engine
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Calibre 7.23
Release date: .
Official source: release notes.
- New features: 🎄 Happy holidays to everyone!
- New features: Content server: Allow managing the data files associated with a book by clicking the three dots in the top right corner of the book's page and choosing "Manage data files"
- New features: Edit metadata dialog: Allow right clicking on the cover to view it in a popup window at larger size
- New features: Add an option to expand the Tag browser tree to show the item that was current when the library was closed
- New features: Add import and export stored template to Preferences / template functions
- New features: Various Quality-of-Life improvements to the dialog used to edit columns with fixed sets of values
- New features: Resolve doi.org links when pasting identifiers
- Bug fixes: Viewer: Fix some HTMLZ files not opening on some systems
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Calibre 7.22
Release date: .
Official source: release notes.
- New features: E-book viewer: Read Aloud: Add an option to control the position of the popup control bar. It can now be placed along the top or bottom edges so as to overlap less with text.
- New features: System tray menu: Add action to restart calibre
- New features: Tolino driver: Support new firmware
- Bug fixes: Windows: Enable popup OS notifications even when system tray icon is disabled to match behavior on other platforms. Notifications can be disabled via Preferences->Look & feel->Disable notifications on job completion
- Bug fixes: Fix a regression that caused incorrect English transliteration of Japanese text even when the UI language is set to Japanese
- Bug fixes: macOS: Dark mode: Fix a regression that caused the scrollbar to no longer be transient
- Bug fixes: DOCX Input: When some text has multiple footnotes insert a space between the consecutive foot note numbers so that they are distinct
- Bug fixes: DOCX Input: Fix ToC nesting not working if the styles for the ToC levels do not use integer margins
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Calibre 7.21
Release date: .
Official source: release notes.
- New features: Edit book: A new tool to create an audio overlay in EPUB files for all text using the Read aloud facility
- New features: Dark mode: make scrollbar more visible with higher contrast and rounded corners
- New features: E-book viewer: In flow mode when scrolling across internal file boundaries using the mouse wheel/touchpad have a short half second pause to ease the transition. Can be controlled via the Scrolling section of the Viewer preferences.
- New features: ebook-meta.exe: Add an option to disallow rendered cover of first page for EPUB
- New features: Book details: Add an action to download the cover to the context menu when right clicking the cover
- New features: Read aloud: Add a restore defaults button to the configuration dialog
- New features: Auto adding: Allow excluding arbitrary file types not just known book file types
- New features: Edit metadata dialog: Add an action to open the book's folder to the context menu of the formats list
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Calibre 7.20
Release date: .
Official source: release notes.
- New features: PDF Input: Automatic header/footer detection and removal
- New features: Read Aloud: Allow configuring an extra pause at the end of every sentence when using the Piper TTS engine
- New features: PDF Output: Add _WIDTH_PIXELS_ and _HEIGHT_PIXELS_ variables to know the width and height of the header/footer area in templates
- New features: Windows: Use calibre's bundled SSL certificates instead of the system certificate store by default
- New features: Trim image tool: Add a control to adjust aspect ratio
- New features: Kobo driver: Add support for the new firmware used by the Tolino Shine 5
- Bug fixes: Fix a regression in previous release that broke copying of book to another library if the books author does not exist in the destination database
- Bug fixes: Read aloud: Piper backend: Fix not working with voices whose names have non-ASCII characters on Windows.
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Calibre 7.19
Release date: .
Official source: release notes.
- New features: E-book viewer: Halve the time taken to open large EPUB format books for the first time
- New features: PDF new engine: Improve header/footer detection
- New features: For column icons and grid view emblems, support icons for both light and dark themes
- New features: News downloads: Mark links to locally available articles with a middle-dot
- New features: When saving a layout also save the main window geometry
- Bug fixes: Windows: Read Aloud: Fix an occasional crash when stopping read aloud when using the legacy windows TTS engine
- Bug fixes: Windows: Read Aloud: Fix clicking in text to change what is being read causing tracking of currently read word to fail when using the legacy Windows TTS engine
- Bug fixes: Read aloud: Fix reading large numeric words causing text synchronization to fail when using some legacy TTS engines
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Calibre 7.18
Release date: .
Official source: release notes.
- New features: E-book viewer: Read aloud: A new Text-to-Speech engine (Piper) that uses a neural network for realistic sounding voices
- New features: New experimental engine to convert PDF files with support for automatic header/footer removal
- New features: Content server: Viewer: Read Aloud: Implement word-by-word tracking when reading aloud if the browser and OS used support it, for example, Chromium on Windows, Firefox on Android and Safari on macOS
- New features: Image popup: Add a context menu with an option to reset the current zoom
- New features: Edit metadata dialog: Show the number of data files on the data files button
- Bug fixes: Fix a regression in the previous release that broke using Tab key to move around the book list while editing cells
- Bug fixes: E-book viewer: Fix scrollbar position not updating during continuous scroll
- Bug fixes: E-book viewer: Fix a harmless error when the book contains page list references whose targets do not exist
-
Calibre 7.17
Release date: .
Official source: release notes.
- New features: E-book viewer: Support for jumping to and displaying paper edition page numbers
- New features: Edit book: When text is selected allow changing the indentation of all lines in the selection by pressing Tab to increase one level or Shift+Tab to decrease one level
- New features: Allow a plugboard to change the series_index as well as the series name.
- New features: News download: News recipes can now optionally use browser engines based on either Qt or Chromium network stacks instead of mechanize
- New features: Email delivery: When sending emails to Kindles do not convert filenames to English letters as Amazon appears to have finally fixed their email servers to handle non-English filenames
- New features: Quickview: Add a tooltip displaying the full cell contents
- Bug fixes: Update the version of the Qt toolkit bundled with calibre to the latest available, fixing some crashes on macOS related to accessibility tools
- Bug fixes: Edit book: Fix searching marking incorrect text in the presence of non-BMP unicode characters
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Calibre 7.16
Release date: .
Official source: release notes.
- New features: Add a driver for the new 2024 Tolino devices. They use a modified version of the Kobo firmware, so they are detected as Kobo devices.
- New features: Various news recipes now have the ability to download past issues, accessible via the Advanced tab in the Schedule news dialog
- Bug fixes: ONLY if you use the calibre Content server, you should update calibre as soon as possible
- Bug fixes: Content server: Fix path traversal vulnerability
- Bug fixes: Content server: Fix SQL injection vulnerability
- Bug fixes: Content server: Fix an XSS vulnerability in one endpoint
- Bug fixes: Content server: Fix an error when opening the downloaded books page directly via a link and using a custom book list template
- Bug fixes: macOS: Fix opening multiple books from Finder with the editor only opening one of the books
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Calibre 7.15
Release date: .
Official source: release notes.
- New features: Fetch news: Allow individual news sources to specify source specific options such as downloading of past editions
- Bug fixes: Windows: MTP driver: Fix a regression in the previous release that caused an error with some devices
- Bug fixes: Icon theme creation dialog: Fix various issues when creating an icon theme with many icons that have light/dark variants
- New news sources: WSJ News by unkn0wn
- Improved news sources: Bloomberg
- Improved news sources: Eenadu
- Improved news sources: Mediapart
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Calibre 7.14
Release date: .
Official source: release notes.
- New features: Book details: When dropping files add an option to add them to the book as data files
- New features: Edit book: A new action to toggle line wrapping mode in all code editors. Can be assigned via Preferences->Keyboard shortcuts->Global actions or added to the toolbar via Preferences->Toolbars->Book wide actions
- New features: Kobo driver: Add an option to force the SeriesID for all books in a series to have the same value
- Bug fixes: Fix a regression in the previous release that broke merging of books when the confirmation for the merge was disabled
- Bug fixes: E-book viewer: Allow some header and footer items such as progress to overflow instead of being truncated
- Bug fixes: HTMLZ output: Make renaming of image files happen in filename order
- Bug fixes: MTP driver: Fix infinite loop when connecting to some devices with more 65K objects in their filesystem
- Bug fixes: Fix shortcut editing widget when Qt is using a theme that inserts accelerators into push button labels automatically
-
Calibre 7.13
Release date: .
Official source: release notes.
- New features: When merging books add an option to store discarded or replaced covers as an alternate cover in the data folder of the target book
- New features: Generate CSV catalog: Add a button to sort the fields by the order in which they appear in the book list
- Bug fixes: MTP driver: Preserve cover aspect ratio for thumbnail generation
- Bug fixes: Fix identifiers not always being merged correctly when merging books
- Bug fixes: DOCX Input: Fix extra left padding when converting lists
- Bug fixes: Amazon metadata download: Get title and comments for audiobook pages
- Bug fixes: Amazon metadata: When filtering search engine results by title ignore words of the title that are purely punctuation
- Bug fixes: When matching books on a device to book in the library assume a match if the title and any one author match, don't require all authors to match
-
Calibre 7.12
Release date: .
Official source: release notes.
- New features: E-book polishing: Add option to download external resources (images/stylesheets/etc.)
- New features: Conversion: Add an option under Structure detection to automatically fill in blank alt attributes for images that have alt text in the image file metadata
- New features: Content server: Use the book title as the filename for downloaded highlights
- New features: Review downloaded metadata dialog: Add a "Previous" button to go back to the last reviewed book
- Bug fixes: Content server viewer: Fix the bottom of the text being cut off on mobile browsers when not in full screen mode. Unfortunately, this means the viewer now requires a browser no more than two years old.
- Bug fixes: Kindle driver: Increase the size of the cover thumbnails sent to the Scribe
- Bug fixes: Kindle output: Fix cover images that contain EXIF data without a rotation not displaying on the Kindle lockscreen
- Bug fixes: E-book viewer: Fix ruby tags not excluded when searching for text
-
Calibre 7.11
Release date: .
Official source: release notes.
- New features: Kindle driver: Add support for sending cover thumbnails to the Kindle Scribe
- New features: A new options under Preferences->Look & feel to draw covers with rounded corners
- New features: Bulk metadata edit: Add a new tab where you can create rules to transform tags/authors/publishers for the selected books
- New features: Tag browser context menu for Formats now has Open with menu items
- New features: E-book viewer: When hovering over the top/bottom margin show a button indicating that a click will open the viewer controls. Can be configured via The Headers and footers section of the viewer Preferences.
- New features: Spell check dialog: Also show count of currently displayed words
- Bug fixes: E-book viewer: Fix searching not ignoring ruby text
- Bug fixes: Edit book: Save the state of the current book when opening a new book via File->Open book
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Calibre 7.10
Release date: .
Official source: release notes.
- New features: Export of calibre data: Ensure individual part files in the exported data are no larger than one gigabyte even if the library contains individual files larger than that size.
- New features: Edit book: Spell check: Add options to exclude words in ALL CAPS or with numbers or in camelCase/snake_case from the list of words
- New features: Allow easily inverting the current search via the right click menu on the search box
- Bug fixes: Kobo driver: Fix database unsupported error with newest firmware
- Bug fixes: DOCX Input: Fix text elements containing only whitespace being incorrectly ignored
- Bug fixes: Bulk metadata dialog: Do not fail when setting covers from ebook files and some of the files have invalid covers
- Improved news sources: Economist
- Improved news sources: The Week
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Calibre 7.9
Release date: .
Official source: release notes.
- New features: Kobo driver: Add support for the new color Kobo devices
- New features: Edit book: Add a setting to control cursor width under Preferences->Editor settings
- New features: Edit book: Regex-function mode: Show a confirmation popup when closing the function editor when there are unsaved changes
- Bug fixes: Fix undocked Quickview dialog not being restored at startup
- Bug fixes: Windows: Fix an issue where closing a maximized calibre window to the system tray and then reconnecting with remote desktop would cause a blank calibre window to be displayed
- Improved news sources: El Correo
- Improved news sources: Eenadu
- Improved news sources: ORFonline
-
Calibre 7.8
Release date: .
Official source: release notes.
- New features: E-book viewer: Highlight panel: Allow filtering the shown highlights by type of highlight
- New features: Conversion: Add support for the CSS text-transform property when subsetting embedded fonts
- New features: E-book viewer: Allow displaying the view mode paged/flow in the header/footer
- New features: Book details popup window: Allow dropping of files to add formats/set the cover just as for the book details panel
- New features: Book details: Context menu: Add a menu action to remove the associated link
- New features: DOCX Input: Add role=doc-noteref for links to footnotes/endnotes so that they popup in more e-book readers
- New features: Add a "Mark all selected books" to the Mark action.
- New features: Add "Hide Empty Categories" to tag browser configuration menu
-
Calibre 7.7
Release date: .
Official source: release notes.
- New features: Trim image: Allow specifying the size of the trim rectangle using numbers
- New features: Full text search: Allow pressing Ctrl+S to select the current book in the calibre book list
- New features: Speed up scrolling through the book list book-by-book by only redrawing the book details panel when scrolling pauses
- New features: Add a tweak under Preferences->Tweaks to set the first day of the week in popup calendars used to input dates
- Bug fixes: CHM Input: Handle CHM files with no HHC Table of Contents
- Bug fixes: E-book viewer: Fix a few settings such as pages per screen and header/footers not being saved in profiles
- Bug fixes: Full text search: Ignore text inside <ruby> tags when indexing books
- Bug fixes: DOCX Output: Preserve spaces around soft hyphens
-
Calibre 7.6
Release date: .
Official source: release notes.
- New features: E-book viewer: Allow saving current settings in "profiles" that can be quickly and easily swapped between
- New features: Edit book: Add a shortcut `Ctrl+M` to merge selected files
- New features: Get books: Add support for Amazon Mexico
- New features: A new toolbar button to show all available actions in sub menus. Can be added via `Preferences->Toolbars & menus`
- New features: Edit book: Allow selecting multiple books to edit at once, opening all selected books in separate editor instances
- Bug fixes: Cover grid: Fix dragging the mouse while holding shift to extend the selection not working well
- Bug fixes: E-book viewer: Fix doing a multi-page selections sometimes causing the start of the selection to move backwards
- Bug fixes: Edit book: Live CSS: Fix regression causing incorrect colors in calibre 7
-
Calibre 7.5.1
Release date: .
Official source: release notes.
- New features: Allow fine tuning the colors used in the calibre interface via Preference->Look & feel->Main interface->User interface colors
- New features: Full text search window: Add actions to the context menu to open the book at the clicked on result. Also allow using the view book shortcut to open the currently selected search result
- New features: When showing the Full text search dialog, pre populate the search box with the contents of the main calibre search box if the main search box contains a simple search
- Bug fixes: Windows: Fix a regression in 7.0 that caused images referring to files on the disk within comments columns to not display in some circumstances
- Bug fixes: E-book viewer: Fix clock showing hour as zero instead of 12 between 12 and 1 am/pm
- Bug fixes: Edit book: When wrapping selected text in a tag, preserve the selection after wrapping
- Bug fixes: Content server: Fix a periodic spurious error message when reading books in offline mode
- Bug fixes: Fix a regression in 7.0 caused by a regression in Qt that would result in calibre hanging rarely when using the cover browser view
-
Calibre 7.4
Release date: .
Official source: release notes.
- New features: Add support for the Supernote A6X2
- New features: Narrow layout: Place the cover browser above the book list when the window has a narrow aspect ratio. Can be controlled via Preferences->Look & feel->Cover browser
- New features: Category notes browser: Add a button to search for books in the currently selected category
- New features: Keyboard shortcut to toggle main window layout (Alt+Shift+L)
- New features: Add the possibility to assign keyboard shortcuts to the tag browser sort functions
- Bug fixes: Fix a regression in the previous release that caused the cover browser to not close when it is used as a separate window
- Bug fixes: Fix a regression in the previous release that caused comments in the Book details panel to be rendered below rather than at the side of the other information
- Bug fixes: Edit book: Fix highlighting of special character not changed immediately after it is edited, only after a subsequent action
-
Calibre 7.3
Release date: .
Official source: release notes.
- New features: Tag browser: Allow displaying buttons next to items that have notes or links for easy access. To enable these use Preferences->Look & feel->Tag browser
- New features: Font subsetting: Preserve all OpenType layout features. This makes the subset font files larger but ensures there is no visual degradation when using the subsetted font files in different contexts.
- Bug fixes: macOS: Fix main calibre window not remembering its size on restart
- Bug fixes: Edit book: Fix the "Show changes" window moving down by a few pixels every time it is opened
- Bug fixes: Amazon metadata download: Fixes for various changes to amazon website markup
- Bug fixes: E-book viewer: When looking up words via Google in Europe pre-approve the GDPR consent cookie
- Bug fixes: Windows: Content server: Fix regression in previous release that broke testing for local connections
- Bug fixes: Windows: Fix a regression that caused selections in the Book details panel to be invisible
-
Calibre 7.2
Release date: .
Official source: release notes.
- New features: Content server: Also listen for all incoming IPv6 connections by default, not just IPv4
- New features: Book details: Allow deleting notes from the right click menu easily
- Bug fixes: Windows: Edit book: Fix a crash when using the check book tool with a book that contains malformed markup, in calibre 7
- Bug fixes: Windows: Improve flickering at startup due to a Qt regression in calibre 7
- Bug fixes: Windows: Fix moving the main window causing popup/floating windows to be resized in calibre 7 due to yet another Qt regression
- Bug fixes: Fix detection of existing books on the Tolino Vision 6
- Bug fixes: Linux: Fix external applications not being launched under Wayland in calibre 7 because of a bug in Qt
- Bug fixes: Linux: Fix network requests failing under Fedora in calibre 7
-
Calibre 7.1
Release date: .
Official source: release notes.
- New features: Notes editor: When pasting HTML with images offer to download remote images in the pasted content
- Bug fixes: Fix regression in 7.0 that broke restore of db from backups
- Bug fixes: Content server: Fix newly added books on homepage not restricted to the books the logged in user is allowed to access
- Bug fixes: When starting in system tray do not flash the main window briefly
- Bug fixes: Notes editor: Fix spurious error message when saving a note that contains pasted HTML that refers to an image
- Bug fixes: Fix a regression that caused the unknown/unset date to incorrectly be displayed/edited as a date in the year AD 101 in some timezones
- Bug fixes: Comments editor: Fix data file links not working
- Bug fixes: Linux installer: Check that the user has libxcb-cursor.so.0 installed. If not quit early with an error message asking them to install it
-
Calibre 7.0
Release date: .
Official source: release notes.
- New features: For details on the major changes in calibre between 7.0 and 6.0, see https://calibre-ebook.com/new-in/sixteen
- New features: The ability to add notes to any author, tag, series, etc. in calibre with links and images
- New features: E-book viewer: Add support for HTML image maps
- New features: Content server home page: Show the three most recently added books in the default library
- New features: Content server: Add button to return to book details page at top level of controls
- New features: Content server: Book details: Open links in comments fields in the same window rather than a new window
- New features: Add a "Show items in selected books" choice to Manage tags and Manage authors
- New features: Show the previously used language, if any, second in the language selection drop down
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Calibre 6.29
Release date: .
Official source: release notes.
- New features: E-book viewer: Add a command line flag --new-instance to force the viewer to open a new window even if the option to always use a single viewer window is set
- New features: E-book viewer: Image popup: Add a checkbox to remember the last used zoom level
- Bug fixes: Annotations browser: Fix exporting highlights in markdown not including all chapter titles for books with only a single highlight per chapter or a multi level ToC
- Bug fixes: E-book viewer: Fix a regression that could cause the viewer to enter an infinite loop when displaying the result of a search that has only one match that is not found
- Bug fixes: E-book viewer: Fix the occasional search result being marked as not found even though it is found
- Bug fixes: TXTZ Output plugin: Only keep images if the text format is one that can reference images
- Bug fixes: TXTZ Output: Fix cover not being properly identified in the generated TXTZ metadata
- Bug fixes: FB2 Input: Fix the "Annotations" section not showing up in the Table of Contents