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Calibre eBook Management Software Technology 

  • Date Created Gemma
  • Last Reply TechNikAl
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Calibre software offers extensive eBook management features
7/10 Informational

The post provides a good overview of Calibre's features and its open-source nature, but could benefit from more personal insights or specific use cases to enhance its helpfulness.

Calibre eBook management new features bug fixes user experience

Calibre is a comprehensive, free, open-source software suite for managing e-books across various platforms including Windows, macOS, and Linux. Users frequently praise its ability to organize e-books into virtual libraries and perform conversions with ease. This versatility appeals to both casual readers and serious bibliophiles.12

A recent update has introduced numerous new features and addressed bugs that enhance the overall user experience. Notable additions include improved search functionalities, support for the latest e-reader firmware, and customization options for the e-book viewer, significantly expanding the software’s utility.34

The community is particularly enthusiastic about the new features and the developers' responsiveness to user feedback, which fosters a collaborative environment. However, some users report issues with certain functionalities, prompting ongoing discussions regarding potential improvements in future updates.56

"Calibre's flexibility makes it the best for e-book management."

"The latest update has truly transformed my reading experience!"

Verdict

Overall, Calibre continues to evolve with user needs at its core. While many features have been enhanced, some bugs persist, indicating further refinement is needed.

TechNikAl Contributor

New Features​

  • Kindle driver: Support the new Kindle PaperWhite 2021
  • Add an option under Preferences->Behavior to have calibre recognize numbers when sorting (this was previously under Preferences->Tweaks)
  • E-book viewer: Add a button to directly open the viewer help section in the calibre user manual to the viewer controls
  • E-book viewer: Prevent the display from sleeping when using auto-scroll or read aloud modes (Implemented only on Windows and macOS)
  • Edit book: Set semantics tool: Add support for EPUB 3 landmarks
  • Add an entry to the Connect/share menu to open the content server in a local browser when it is running

Bug Fixes​

  • Content server: Fix some OPDS feeds failing with non-ASCII content
  • Tag browser: Fix incorrect first letter partitioning when enabling numeric collation of items that start with a number
  • 5.31.1 fixes a bug in an HTML serialization library calibre uses that broke a few things, such as the comments editor tool in the metadata dialog

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TechNikAl Contributor

New Features​

  • Edit book: Add a tool to transform HTML tags based on rules (Tools->Transform HTML)
  • Driver for the new Tolino Vision 6
  • Kobo driver: Add support for the latest firmware released last week
  • When picking a random book ensure recently chosen books are not re-selected
  • Icon theme chooser dialog: Allow right clicking on a theme to visit its homepage

Bug Fixes​

  • Amazon metadata download: Add support for more markup variations in amazon's sites that could prevent the fetching of ratings, comments and series metadata for some books
  • Google search: Add support for new beta search results page markup that was preventing using cached Google pages to search for Amazon metadata
  • PDF Output: Fix the option to preserve cover aspect ratio being ignored when converting comics
  • DOCX Input: Sanitize image filenames more strictly to workaround broken EPUB software
  • Linux binary: Fix file dialogs not working on Fedora 35 under KDE
  • When sending email to the Kindle and PocketBook sync services use ASCII filenames as there have been some reports of issues with non-ASCII filenames with these services.
  • Book Details: Fix missing copy options on composite columns
  • Ask for confirmation when deleting covers from books

Download Calibre
 
TechNikAl Contributor

New Features​

  • Allow changing the icon used for calibre libraries. Right click the library icon in calibre and choose "Change the icon for this library"
  • Comments editor: Use a single line for all three toolbars if they fit
  • Edit book: Allow merging HTML files by drag and drop of the files onto another HTML file
  • Kobo driver: Add support for listing purchased audiobooks
  • Edit metadata all-in-one mode: The cover and formats column now gives as much vertical space as possible to the cover image
  • Add books dialog: When a non-book file type is added the next time the dialog is used, preselect the "All files" filter
  • calibre-server --manage-users: Allow managing users while the server is running and also add actions to automate changing user account restrictions
  • EPUB 3 metadata: If the book contains a "subtitle" append it to the main title when reading metadata

Bug Fixes​

  • E-book viewer: Fix an occasional hang on startup at "Loading section"
  • Get books: Update the Kobo plugin for website changes
  • Bulk edit metadata dialog: Fix changing the search mode resetting other fields
  • E-book viewer: Fix sorting of highlights incorrect in books that use HTML ids with a hyphen in them
  • PDF Output: Fix the option to break long words at the ends of lines causing boxes to be rendered at the end fo the line on macOS with some fonts
  • Google metadata plugin: When searching by ISBN if no results are found retry using an alternate query syntax

Download Calibre
 
TechNikAl Contributor

New Features​

  • Allow changing the icon used for calibre libraries. Right click the library icon in calibre and choose "Change the icon for this library"
  • Comments editor: Use a single line for all three toolbars if they fit
  • Edit book: Allow merging HTML files by drag and drop of the files onto another HTML file
  • Kobo driver: Add support for listing purchased audiobooks
  • Edit metadata all-in-one mode: The cover and formats column now gives as much vertical space as possible to the cover image
  • Add books dialog: When a non-book file type is added the next time the dialog is used, preselect the "All files" filter
  • calibre-server --manage-users: Allow managing users while the server is running and also add actions to automate changing user account restrictions
  • EPUB 3 metadata: If the book contains a "subtitle" append it to the main title when reading metadata

Bug Fixes​

  • E-book viewer: Fix an occasional hang on startup at "Loading section"
  • Get books: Update the Kobo plugin for website changes
  • Bulk edit metadata dialog: Fix changing the search mode resetting other fields
  • E-book viewer: Fix sorting of highlights incorrect in books that use HTML ids with a hyphen in them
  • PDF Output: Fix the option to break long words at the ends of lines causing boxes to be rendered at the end of the line on macOS with some fonts
  • Google metadata plugin: When searching by ISBN if no results are found retry using an alternate query syntax
  • 5.33.2 fixes a couple of regressions that broke the toolbar in the popup comments editor dialog and rendering of the download metadata button in the edit metadata dialog on Windows, as well as reading files from MTP devices on Windows

Download Calibre
 
TechNikAl Contributor

New Features​

  • Happy holidays to everyone!
  • Driver for the new Nook Glowlight 4
  • Edit book: Spell check tool: Add an exclude files button to exclude some files from being checked
  • EPUB/MOBI Catalogs: Increase the maximum thumbnail size to 3 inches from 2 inches
  • Allow creating a shortcut in Preferences->Shortcuts->Edit metadata to paste metadata ignoring the value of the exclude_fields tweak
  • E-book viewer: Displays links marked up as glossary and bibliography links as popups
  • Add a tweak in Preferences->Tweaks to provide the sort value for undefined numbers

Bug Fixes​

  • Edit book: Fix pressing F8 to jump to next misspelled word not working after last word in current file
  • Fix PDB E-reader output broken in calibre 5
  • Edit book: Reports: Include descendant selectors that use classes when counting class usage
  • E-book viewer: Fix an error when opening some books with highlights that span in-line text formatting
  • MTP driver: Do not send the calibre device db files to the root folder on the Supernote A5 x as it fails
  • ToC Editor: Workaround an occasional error when closing on Windows if the file being edited is in a DropBox/antivirus prone folder
  • Fix a regression in the previous release that broke creating new keyboard shortcuts
  • Comments editor: When flowing the tool bar onto multiple lines do not split up groups of buttons
  • Various compatibility fixes for Python 3.10 used by some Linux distributions

Download Calibre
 
TechNikAl Contributor

New Features​

  • Coloring/icon rules: Allow creating a rule for date columns that matches *today*
  • Kobo driver: Add support for new firmware
  • Content server: Show total number of results when searching for books

Bug Fixes​

  • E-book viewer: Fix searching for text near the end of a chapter sometimes not working
  • E-book viewer: Fix auto hyphenation on macOS not rendering the hyphens correctly
  • Edit book: Reports: Fix thumbnails of SVG images not rendered
  • ODT metadata: Support reading tags from multiple elements
    • LRF Input: Fix a regression in calibre 5 that broke parsing of some LRF files
    • MOBI output: Dont fail if input document contains invalid % based lengths
    • AZW3 Input: Handle AZW3 files with incorrect TAGX Offset INDX header fields
    • Comic conversion: Fix conversion of comic images that are stored as grayscale images in JPEG format not working when converting to PDF with image processing turned off
    • calibredb catalog: Fix --ids and --search options not working for CSV/XML catalogs
    • Tag browser: Fix the find box not using all available width
    • E-book viewer: Remove books that do not exist from the recently opened book list
    • Completion popups: Fix display of items containing line breaks
    • Fix line breaks in custom column descriptions not being rendered in their tooltips
    • Fix Preferences->Searching->Clear search histories not taking effect till a restart for some search boxes
    • Hierarchical entries in user category may not merge correctly in tag browser

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TechNikAl Contributor

New Features​

  • Edit metadata dialog: Allow controlling which custom columns are present in this dialog via Preferences->Look & feel->Edit metadata
  • Edit metadata dialog: Allow manually sizing the various sections of the dialog in "All on 1 tab" mode
  • Edit book: Spell checking: Update the bundled English and Spanish dictionaries
  • BibTeX catalogs: Support tags like custom columns

Bug Fixes​

  • Amazon metadata download: Fix paragraphs in the comments being merged
  • Amazon.de metadata download: Fix published date and series information not being fetched for some books
  • Email delivery: Fix sending email via Hotmail not working since this week because Microsoft changed the SMTP server name
  • Do not remove articles for titles in the Polish language
  • E-book viewer: When using Read aloud do not automatically lookup the highlighted word until read aloud is paused or stopped
  • E-book viewer: Fix Ctrl+p shortcut for printing not working
  • Show an error when viewing a specific format and the file is missing
  • Edit book: Fix renaming of classes that start/end with non word characters not working
  • Edit book: Preview panel: Fix hyphenation at end of line being rendered as boxes on macOS
  • Fix incorrect selection size displayed in Trim image dialog when image is scaled down to fit
  • Edit book: Fix pasting files from another editor instance failing if a file with the same name already exists
  • When reviewing metadata if the newly downloaded metadata has no language but there is an existing language, ensure it is preserved

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TechNikAl Contributor

New Features​

  • Book details: Add actions to trim the cover to the right-click menu
  • Allow removing multiple email addresses at once in Preferences->Sharing by email
  • Book details: Use a better mono-spaced font on Windows by default
  • Add a tweak in Preferences->Tweaks to change the behavior of the Tab key when completing entries
  • Edit metadata: In "All in one" mode add an adjustable splitter between the cover and formats boxes

Bug Fixes​

  • Textile output: Dont fail if input document has invalid padding or margin specifications
  • E-book viewer: Fix image display window not remembering its size and settings when run from within calibre
  • E-book viewer: Fix setting to use roman numerals for series not being respected
  • Edit book: When saving a copy do not fail if the original file has no write permissions
  • Embed fonts tool: Create when missing
    • Tag editor: Improve performance when very large number of tags present

Download Calibre
 
TechNikAl Contributor

New Features​

  • E-book viewer: When displaying estimated time to completion for reading a book, remember the reading rate the next time the book is opened
  • Dark theme: Highlight the current cell in the book list with a darker background and different foreground to make it more obvious
  • An option to disable editing composite columns in the main book list when Tabbing through them (Preferences->Look & feel->Edit metadata)

Bug Fixes​

  • Tag editor: Fix regression in previous release that caused double clicking on tags to not work on non Linux platforms
  • Copy to library: Fix annotations not being copied
  • Edit book: Spell check: Fix words after a comment not being checked
  • PDF Output: Fix conversion failing if there are ToC entries pointing to removed content
  • E-book viewer: Fix an error when opening books with MathML for the second time if the last read position was at a MathML element
  • Edit book: Fix double clicking to select a word also selecting smart quotes surrounding the word
  • EPUB 3 metadata: Fix non-integer series index being sometimes represented using exponential notation

Download Calibre
 
TechNikAl Contributor

New Features​

  • E-book viewer: Allow scrolling of the ToC, highlights, bookmarks, etc. with touch gestures
  • Edit metadata dialog: When using the change case operations if some text is selected, only operate on the selected text
  • Use atomic writes for the config files ensures no partial data is written in case of crash/powerloss

Bug Fixes​

  • Content server: Fix reading of books with thousands of internal files not working in the Chrome browser
  • Catalog generation: Fix a rare crash when generating very large catalogs
  • Edit/Polish book: Fix hardcoded Unicode ligatures not being preserved in AZW3 format books
  • Fix automatic searches causing search box to lose focus when search as you type is enabled in Preferences->Searching
  • Edit book: Check book: Auto fix package identifier being empty
  • Amazon metadata download: Fix getting series info from amazon.jp
  • Edit book: Insert hyperlinks: When sorting anchors on elements without any text content, use the anchor itself
  • Edit book: Make the saved search panel freely resizable
  • Edit book: When dragging to select a region or adjust the selection fix mouse moving outside the image causing the region to no longer be adjusted

Download Calibre
 
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