Calibre eBook Management Software (free, open-source, cross platform)

calibre 6.17

New Features​

  • Font subsetting: Add support for WOFF format fonts and CID keyed fonts. Also further reduce file sizes when subsetting
  • Book details: Show a link to open the data files folder when data files are present
  • Template language: Add various functions to query the extra files associated with a book
  • Edit book: Compress images: Support compression of images in the WEBP format as well
  • Comments editor: Add buttons to create links to data files and also to folders easily when inserting a link
  • Allow displaying the id, formats and path builtin columns via Preferences->Add your own columns
  • Add a tweak in Preferences->Tweaks to allow for changing the titles of builtin columns
  • Trash bin: Add a button to clear the bin
  • Metadata editor: Use a dedicated editor with preview for custom columns that store markdown formatted text

Bug Fixes​

  • Fix a regression in the previous release that could result in empty author folders remaining in the library when the author of a book is changed
  • Fix the data files associated with a book not being handled when using the Merge books and Copy to library functions
  • Fix a regression in the previous release that broke some operations in the Manage tags/authors/etc. dialogs
  • Ensure metadata.opf is always written when deleting book even if it is not sequenced for backup

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calibre 6.18

New Features​

  • Cover download: Allowing saving alternate covers to disk or in the book's data folder by right clicking on the cover
  • Content server: Allow disabling full text search via the web interface
  • When sending books to the device confirm the overwrite if the book already exists on the device
  • E-book viewer: Handle horizontal wheel events as section jumps in paged mode
  • Comic Input: When grayscaling comic images use 16bit gray instead of 8bit for better fidelity
  • Add a new option in Preferences->Searching to disable keyboard searching in book list (i.e. you can turn off the behavior that pressing a key will jump to the first book whose title starts with that letter)
  • Manage categories dialog: Use alternating row colors and allow adjusting row height
  • Allow assigning a keyboard shortcut in Preferences->Shortcuts to open the data folder of a book
  • Various improvements to syntax highlighting for the Markdown long text editor

Bug Fixes​

  • Fix a regression in 6.16 that broke restoring of the database
  • Tag browser: Fix using F2 to edit items not allowing completion
  • Book details: Fix formatting of text when copying all book details in narrow mode
  • Book details: Fix copy all not respecting line breaks in fields
  • Fix a regression in previous release that broke scrolling when using the scroll_per_row tweak
  • Fix a regression in the previous release that broke the category manager dialog in some situations

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calibre 6.18.1

New Features​

  • Cover download: Allowing saving alternate covers to disk or in the book's data folder by right clicking on the cover
  • Content server: Allow disabling full text search via the web interface
  • When sending books to the device confirm the overwrite if the book already exists on the device
  • E-book viewer: Handle horizontal wheel events as section jumps in paged mode
  • Comic Input: When grayscaling comic images use 16bit gray instead of 8bit for better fidelity
  • Add a new option in Preferences->Searching to disable keyboard searching in book list (i.e. you can turn off the behavior that pressing a key will jump to the first book whose title starts with that letter)
  • Manage categories dialog: Use alternating row colors and allow adjusting row height
  • Allow assigning a keyboard shortcut in Preferences->Shortcuts to open the data folder of a book
  • Various improvements to syntax highlighting for the Markdown long text editor

Bug Fixes​

  • Fix a regression in 6.16 that broke restoring of the database
  • Tag browser: Fix using F2 to edit items not allowing completion
  • Book details: Fix formatting of text when copying all book details in narrow mode
  • Book details: Fix copy all not respecting line breaks in fields
  • Fix a regression in previous release that broke scrolling when using the scroll_per_row tweak
  • Fix a regression in the previous release that broke the category manager dialog in some situations
  • 6.18.1 fixes a regression that broke setting metadata and generating PDF files in the macOS and Linux binary builds

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calibre 6.19.1

New Features​

  • HTML Input: Restrict adding of resources like images to only files within the folder hierarchy starting at the parent folder of the root HTML file Can be controlled by customizing the HTML to Zip plugin in Preferences->Plugins or the --allow-local-files-outside-root option to the ebook-convert command

Bug Fixes​

  • PDF Output: Fix regression in previous release causing non-English entries to be incorrectly encoded into the PDF bookmarks
  • PDF Output: Fix regression in previous release that caused blank pages when generating headers or footers
  • Book list: Fix editing-in-place not pre-selecting existing text for some column types
  • Amazon.de metadata download: Update for site changes
  • PDF Output: Set /Creator and /Producer in /Info
  • Fix row height incorrect in Manage category dialog when blank
  • 6.19.1 fixes a bug in 6.19.0 that broke the edit metadata dialog

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calibre 6.20

Bug Fixes​

  • CHM Input: Fix a regression in the previous release that broke conversion of CHM files
  • Windows: Make moving files in the calibre library folder more robust, locking folders in addition to files, before the start of the move
  • Get books: Update Barnes and Noble store plugin for website changes
  • Kindle output: Only re-encode JPEG images with EXIF metadata if the metadata contains actual transpose operations
  • PDF Output: Fix error when input document contains multiple instances of a font some with vertical metrics and some without
  • PDF Output: Fix using CSS Multicolumns for body causing conversion to fail when header/footer is specified
  • MOBI Input: Fix a crash when converting some corrupted palmdoc compressed MOBI files
  • E-book viewer: Ensure CSS stylesheets are interpreted as UTF-8

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calibre 6.21

New Features​

  • DOCX Output: Add support for SVG images
  • E-book viewer: Allow configuring the actions triggered by touch gestures
  • DOCX Input: Add support for SVG images

Bug Fixes​

  • Windows: Fix a regression in the previous release that could cause files to be deleted if one of the files/folders was open in another program while changing title/author in calibre
  • macOS: Fix extra dock icons visible when doing a job using Qt WebEngine such as converting to PDF or searching in Get books
  • macOS and Linux: Fix an error when changing metadata or deleting books whose files are owned by another user
  • CHM Input: Yet another regression opening CHM files with missing internal files on windows
  • CHM Input: Resolve absolute links to resource files from the root of the CHM file

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calibre 6.22

New Features​

  • Kobo driver: Add support for newest firmware
  • Trash bin: Allow setting removed books to be permanently deleted on library close
  • Windows: Nicer error message when file/folder is locked in another program

Bug Fixes​

  • PDF Output: Fix regression that caused large slowdowns when converting books with lots of internal HTML files to PDF
  • CHM Input: Fix ToC entries that use fragments not supported
  • E-book viewer: Fix searching for text next to hidden text not scrolling to the match
  • E-book viewer: Fix selection popup not showing for some books on some platforms when the selection is in the top line
  • DOCX Output: Fix multiple SVG images in the input document causing all the SVG images in the output to be just one of the input images
  • MOBI Input: Ignore another form of corruption in trailing bytes

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calibre 6.23

New Features​

  • PDF Output: Add an option to discard the book cover instead of inserting it as the first page of the PDF
  • Content server: Allow opening the book details page for a matches book from the Full text search results page

Bug Fixes​

  • Windows: Fix empty data folder getting created in directory calibre is launched from when changing title/author for a book with an existing data folder
  • LIT Output: Fix error converting anything to LIT on Windows
  • Ignore failures to expire old trash during startup
  • Amazon metadata download: Fix retrieval of publisher information from amazon.fr

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calibre 6.24

New Features​

  • Easily manage the extra data files associated with a book by right clicking the edit metadata button and choose "Manage data files"
  • Content server: Full text search: Allow searching a restricted subset of books
  • E-book viewer: Allow clicking on calibre:// URLs
  • Support fuzzier searching in the Tag browser find allowing unaccented characters to match accented ones

Bug Fixes​

  • DOCX conversion: Preserve underline style and color
  • Fix incorrect sorting of device view after some operations
  • Fix visit content server in browser not working when the content server is configured to listen on an IPv6 interface
  • Fix one hour offset in some timezones on Windows for dates before 1970
  • Windows: HTML Input: Fix error when trying to add HTML files with links to other files that are invalid pathnames
  • Get books: Update various Polish language book stores for website changes

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calibre 6.25

New Features​

  • Book details panel: De-emphasize titles making the actual data stand out more
  • Allow using the new manage data files dialog from within the edit metadata dialog
  • Trash dialog: Allow right clicking on an entry to save it to disk
  • When merging books by drag-and-drop add an option to use the dragged cover instead of the cover in the target book
  • Create catalog: Add buttons to easily select all/non/visible fields when creating CSV/XML catalogs
  • Preferences->Add your own columns: Add buttons to show/hide all columns

Bug Fixes​

  • Fix a regression in the previous release that broke parsing of some ISO-8601 timestamps
  • E-book viewer: Mouse wheel horizontal events should jump sections not internal file boundaries
  • Fix Preferences->Add your own columns changing check state on moving columns
  • Get books: update various Polish e-book stores for website changes
  • E-book viewer: Fix CFI parsing of numbers with trailing zeros causing some bookmarks to not work
  • E-book viewer: Show an error when creating a bookmark if the bookmark position is not found
  • CBR Input: Fix comics with extremely long internal filenames not working on Windows
  • Edit book: Saved searches: Fix incorrect import in generated source code for some builtin functions
  • Data file manager: Fix errors on systems with larger font sizes

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calibre 6.26

New Features​

  • MTP driver: Support the new Kindle Scribe firmware that causes it to act as an MTP device instead of USB disk. Add "Documents" to the list of default folders to send books to
  • E-book viewer: Add a new option under scrolling behavior to control horizontal mouse wheel events jumping to next section
  • Allow full customization of Book details styling via Preferences->Look & feel->Book details

Bug Fixes​

  • Get books: Update ebooks.com plugin for website changes
  • Edit book: Fix searching for non-BMP unicode characters highlighting only half the character
  • E-book viewer: Fix displaying more than one page per screen causing page layout to be slightly wrong for some books
  • E-book viewer: Fix clicking on links with empty destinations hanging the viewer
  • E-book viewer: Fix modifying, then jumping to and then modifying the highlight again from the highlights panel causing the highlight to be deleted
  • E-book viewer: Fix indication of current section in Table of Contents sometimes wrong after changing font size
  • E-book viewer/Content server: Disallow browser native context menu when right clicking in sandboxed iframes
  • MTP driver: Ignore top level folders whose names start with a leading dot Also ignore AppleDouble files, top level system and fonts folders and sdr folders on Kindle devices
  • FB2 Input: use the <p> tag for paragraphs that dont contain other block content
  • E-book viewer: Fix clicking on the back/forward buttons not working in some situations
  • E-book viewer: Fix scrolling to Table of Contents items that are within a single internal file not activating the back button
  • E-book viewer: Fix changing the sans-serif font without also changing the monospaced font not working

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calibre 6.27

New Features​

  • Kobo driver: Support updated firmware
  • Nook driver: Add support for Nook Glowlight Plus 2023
  • Data files manager: Allow drag and drop of files onto the list of files to add new files
  • Support 7z archives in addition to ZIP and RAR for automatic ebook extraction when adding to calibre
  • Linux/macOS: Fix detection of the Kindle Scribe with MTP firmware
  • E-book viewer: Allow clearing list of recently opened books from the open button's popup menu itself
  • E-book viewer: Add a link to show the currently viewed book in the calibre library (Go to->Metadata in the viewer controls to access it)

Bug Fixes​

  • Book information dialog: Fix a regression that caused incorrect color for titles in dark mode
  • E-book viewer: Fix searching does not jump to first match if all matches are before current position in book
  • EPUB Output: Fix duplicated title page entry in spine for books that define a title page that ends up getting split
  • Allow for-light/dark-theme icon overrides to work for plugin icons placed by the user in the override folder
  • PDF Output: Fix background image + text not rendering correctly if the same background image is used with different text multiple times
  • E-book viewer: Fix section titles in highlights panel being incorrectly expanded to full titles when the section has multiple highlights
  • Prevent Quickview window from opening in the background
  • Edit book: Fix a regression in the previous release that caused an error when doing text based searches

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calibre 6.28

New Features​

  • Edit book: Show full path to book being edited in the status bar
  • Edit book: When adding dictionaries allow directly a LibreOffice adding the dictionary just by choosing the language
  • Edit book: When saving a copy add some convenience actions to edit the copy immediately either in the current editor window or a new window
  • E-book viewer: Highlights panel: Allow right clicking to export only selected highlights

Bug Fixes​

  • Edit book: Fix a regression in the previous release that caused Text search to sometimes not select matches correctly
  • Edit book: When copying files do it in order so that the files are pasted in the same order when pasting into another editor instance
  • Edit book: Fix smart tag insert not working correctly if the selected text starts with the closing angle bracket of a tag
  • Save to disk: Do not limit the total path length to 240 characters on non-Windows platforms
  • Fix incorrect cover for AZW3 version of calibre User Manual
  • Content server: Change formatting of book details to match new de-emphasized titles based formatting in the main calibre program
  • PDF metadata: Fix a regression that broke updating metadata in PDF files without an /Info dictionary
  • NOOK driver: For the Glowlight 2023 write the calibre metadata files into the NOOK sub-folder as the firmware does not allow writing files into the root folder
  • NOOK driver: Fix Glowlight 2023 not being detected on Linux and macOS
  • E-book viewer: Make CFI calculation more robust especially on pages with very little content
  • E-book viewer: Workaround bug in Chromium where getBoundingClientRect() fails sometimes leading to incorrect calculation of anchor positions
  • Fix errors caused by .DS_Store files inserted into the .caltrash directory on macOS if the user happens to open .caltrash in Finder

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calibre 6.28.1

New Features​

  • Edit book: Show full path to book being edited in the status bar
  • Edit book: When adding dictionaries allow directly a LibreOffice adding the dictionary just by choosing the language
  • Edit book: When saving a copy add some convenience actions to edit the copy immediately either in the current editor window or a new window
  • E-book viewer: Highlights panel: Allow right clicking to export only selected highlights

Bug Fixes​

  • Edit book: Fix a regression in the previous release that caused Text search to sometimes not select matches correctly
  • Edit book: When copying files do it in order so that the files are pasted in the same order when pasting into another editor instance
  • Edit book: Fix smart tag insert not working correctly if the selected text starts with the closing angle bracket of a tag
  • Save to disk: Do not limit the total path length to 240 characters on non-Windows platforms
  • Fix incorrect cover for AZW3 version of calibre User Manual
  • Content server: Change formatting of book details to match new de-emphasized titles based formatting in the main calibre program
  • PDF metadata: Fix a regression that broke updating metadata in PDF files without an /Info dictionary
  • NOOK driver: For the Glowlight 2023 write the calibre metadata files into the NOOK sub-folder as the firmware does not allow writing files into the root folder
  • NOOK driver: Fix Glowlight 2023 not being detected on Linux and macOS
  • E-book viewer: Make CFI calculation more robust especially on pages with very little content
  • E-book viewer: Workaround bug in Chromium where getBoundingClientRect() fails sometimes leading to incorrect calculation of anchor positions
  • Fix errors caused by .DS_Store files inserted into the .caltrash directory on macOS if the user happens to open .caltrash in Finder
  • Version 6.28.1 fixes a regression in 6.28.0 that could cause errors when merging some book records in calibre

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calibre 6.29

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
  • 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
  • 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
  • E-book viewer: Fix the occasional search result being marked as not found even though it is found
  • TXTZ Output plugin: Only keep images if the text format is one that can reference images
  • TXTZ Output: Fix cover not being properly identified in the generated TXTZ metadata
  • FB2 Input: Fix the "Annotations" section not showing up in the Table of Contents
  • Linux: Content server: Do not call listen on pre-activated sockets
  • Fix sort order of similarly-named hierarchical categories
  • Fix a regression that broke reading of covers from HTMLZ and TXTZ files

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calibre 7.0

New Features​

  • For details on the major changes in calibre between 7.0 and 6.0, see calibre - New in calibre 7.0
  • The ability to add notes to any author, tag, series, etc. in calibre with links and images
  • E-book viewer: Add support for HTML image maps
  • Content server home page: Show the three most recently added books in the default library
  • Content server: Add button to return to book details page at top level of controls
  • Content server: Book details: Open links in comments fields in the same window rather than a new window
  • Add a "Show items in selected books" choice to Manage tags and Manage authors
  • Show the previously used language, if any, second in the language selection drop down

Bug Fixes​

  • Metadata download: Fix downloads from Google not working in Europe because of the GDPR
  • Fix editing dates with days sometimes off by one day
  • Edit book: Fix highlighting for special characters not visible when the cursor is on the line with the special character
  • Fix embedding metadata showing infinite error dialogs on windows if a file is locked by another program
  • PDF Output: Fix an error when trying to set header or footer with an input document that has invalid content after the main body
  • E-book viewer: Read aloud: Fix clicking on empty spaces causing read aloud to restart from beginning of chapter
  • Book details: Fix Manage authors via context menu not working
  • E-book viewer: Showing chrome should close an active footnote popup first and only show chrome if the user repeats the action
  • Fix very slow metadata updates on some PDF files
  • Catalogs: Do not erase any tags the user adds to a catalog book entry when the catalog is re-generated
  • Linux installer: Fix downloading of signatures for older versions
  • Fix editing non-active Virtual library changes sort of book list

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calibre 7.1

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
  • Content server: Fix newly added books on homepage not restricted to the books the logged in user is allowed to access
  • When starting in system tray do not flash the main window briefly
  • Notes editor: Fix spurious error message when saving a note that contains pasted HTML that refers to an image
  • 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
  • Comments editor: Fix data file links not working
  • 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
  • LRF Output: Fix a regression in 7.0 that broke conversion to LRF

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calibre 7.2

New Features​

  • Content server: Also listen for all incoming IPv6 connections by default, not just IPv4
  • 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
  • Windows: Improve flickering at startup due to a Qt regression in calibre 7
  • Windows: Fix moving the main window causing popup/floating windows to be resized in calibre 7 due to yet another Qt regression
  • Fix detection of existing books on the Tolino Vision 6
  • Linux: Fix external applications not being launched under Wayland in calibre 7 because of a bug in Qt
  • Linux: Fix network requests failing under Fedora in calibre 7

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calibre 7.3

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
  • 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
  • Edit book: Fix the "Show changes" window moving down by a few pixels every time it is opened
  • Amazon metadata download: Fixes for various changes to amazon website markup
  • E-book viewer: When looking up words via Google in Europe pre-approve the GDPR consent cookie
  • Windows: Content server: Fix regression in previous release that broke testing for local connections
  • Windows: Fix a regression that caused selections in the Book details panel to be invisible

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calibre 7.4

New Features​

  • Add support for the Supernote A6X2
  • 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
  • Category notes browser: Add a button to search for books in the currently selected category
  • Keyboard shortcut to toggle main window layout (Alt+Shift+L)
  • 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
  • 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
  • Edit book: Fix highlighting of special character not changed immediately after it is edited, only after a subsequent action
  • Move Preferences to the left in the default toolbar, making it less likely to be hidden behind an expander button on small screens

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