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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​

  • E-book viewer: Read aloud: On Windows switch to using the new Microsoft speech subsystem with access to more voices
  • calibre:// URL scheme: allow specifying a Virtual library for show_book URLs
  • Add by ISBN: Allow adding using identifiers other than ISBN as well
  • Update bundled Qt to 6.4 this means calibre on macOS is now only supported on Big Sur and newer
  • Spell check dialog: Allow up and down arrow keys to work regardless of focus
  • Allow multiple Template tester dialogs

Bug Fixes​

  • Windows MTP device driver: Ignore failure to enumerate objects inside non-root folders
  • Book list: Fix a regression in the previous release that broke dragging to select multiple books
  • Content server viewer: Fix reload book not actually reloading until the browser is also refreshed
  • E-book viewer: Fix occasional false warning about highlight being overwritten
  • E-book viewer: Fix detection of selected highlights when all text is selected
  • Fix an error when embedding metadata into a large number of books
  • When updating metadata in EPUB 2 files and no language is specified, do not remove the <dc:language> tag as this causes epubcheck to complain. Instead set the language to "und"
  • Wireless device driver: Remove the timeout for initial connection
  • Use an icon rather than a color to report errors in fields and the search box
  • Conversion dialog: Regex builder: Workaround bug in Qt that prevented searching for non breaking spaces in the wizard used to test search expressions
  • Spell check dialog: move down after correcting word, not up
  • Get books: Fix Mobileread store plugin not working

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TechNikAl Contributor

New Features​

  • Content server: E-book viewer: Long tapping on an image now causes it to be displayed in an internal popup rather than a new window as some browsers block the creation of new windows

Bug Fixes​

  • E-book viewer: Fix some adjacent highlights with nothing in between them not being displayed.
  • Content server: Workaround for Safari regression causing bookmarks to disappear on reload
  • E-book viewer: Read aloud: Fix a regression in the previous release that caused the Read aloud controls to not reappear when Read aloud is canceled and restarted
  • E-book viewer: Read aloud: Fix a regression in the previous release that caused an error when using Read aloud on a chapter with no text, such as the cover page
  • E-book viewer: Fix a regression that caused a spurious error on Windows when reading out selected text
  • Fix a regression in calibre 5.0 that broke sorting the device view by title if one of the books has an empty title
  • Edit book: Spell Check dialog: Fix second word not getting selected when after first word is fixed
  • Improve hover highlight color in tree views

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TechNikAl Contributor

New Features​

  • Edit metadata: When setting a cover from comic files allow choosing which page to use as the cover
  • Allow display of columns built from other columns as comments in Book details
  • Comments editor: Add a shortcut for "Paste and match style" (Ctrl+Shift+v)

Bug Fixes​

  • macOS: ToC Editor: Fix mouse becoming unusable when trying to create a new entry
  • When computing title sorts strip leading and trailing quotes, not just leading quotes
  • Content server viewer: Fix searching only showing results from the current chapter onwards
  • Check book: Fix some incorrect line numbers reported in a few CSS error messages

Download Calibre
 
TechNikAl Contributor

New Features​

  • Edit metadata: When setting a cover from comic files allow choosing which page to use as the cover
  • Allow display of columns built from other columns as comments in Book details
  • Comments editor: Add a shortcut for "Paste and match style" (Ctrl+Shift+v)

Bug Fixes​

  • macOS: ToC Editor: Fix mouse becoming unusable when trying to create a new entry
  • When computing title sorts strip leading and trailing quotes, not just leading quotes
  • Content server viewer: Fix searching only showing results from the current chapter onwards
  • Check book: Fix some incorrect line numbers reported in a few CSS error messages
  • Fix regression in 6.14.0 that caused some generated resources to be excluded from the calibre source bundle
  • Fix regression in 6.14.0 that broke using paths with single quotes in them for the calibre library
  • Fix ToC Editor on macOS in 6.14.0 not working inside the Edit book tool only

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TechNikAl Contributor

New Features​

  • Allow adding external links to tags, series, publishers, etcetera in addition to authors
  • calibre:// URL scheme: Add support for a new type of URL that pops up the metadata of the specified book in a new window
  • EPUB Output: Do not shrink images to fit the screen size by default, as modern readers do this themselves well enough. Can be controlled via an option in the EPUB Output section of the conversion dialog
  • Edit metadata dialog: Add buttons to pop up the category editing windows easily
  • Metadata download: Allow specifying rules to transform publisher names in addition to author and tag names
  • Edit metadata dialog: Use both a colored border and an icon to indicate errors in line edits
  • A new tweak in Preferences->Tweaks to control what program is run when clicking on URLs in calibre

Bug Fixes​

  • E-book viewer: Fix a regression that caused incorrect highlight collision detection in some books
  • E-book viewer: Fix images embedded inside SVG tags not available for viewing in a pop-up
  • DOCX Input: Do not ignore images that are present as fallbacks for a word drawing object
  • Comic Input: When converting grayscaled PNG images to PNG ensure output images are stored as indexed PNG
  • Fix active tab not easy to distinguish in dark mode
  • Content server: Fix re-opening book from home page after making progress not opening to correct last read position when a user is logged in
  • Comments editor: When copying to clipboard, copy clean HTML rather than the junk Qt produces

Download Calibre
 
TechNikAl Contributor

New Features​

  • Allow adding external links to tags, series, publishers, etcetera in addition to authors
  • calibre:// URL scheme: Add support for a new type of URL that pops up the metadata of the specified book in a new window
  • EPUB Output: Do not shrink images to fit the screen size by default, as modern readers do this themselves well enough. Can be controlled via an option in the EPUB Output section of the conversion dialog
  • Edit metadata dialog: Add buttons to pop up the category editing windows easily
  • Metadata download: Allow specifying rules to transform publisher names in addition to author and tag names
  • Edit metadata dialog: Use both a colored border and an icon to indicate errors in line edits
  • A new tweak in Preferences->Tweaks to control what program is run when clicking on URLs in calibre

Bug Fixes​

  • E-book viewer: Fix a regression that caused incorrect highlight collision detection in some books
  • E-book viewer: Fix images embedded inside SVG tags not available for viewing in a pop-up
  • DOCX Input: Do not ignore images that are present as fallbacks for a word drawing object
  • Comic Input: When converting grayscaled PNG images to PNG ensure output images are stored as indexed PNG
  • Fix active tab not easy to distinguish in dark mode
  • Content server: Fix re-opening book from home page after making progress not opening to correct last read position when a user is logged in
  • Comments editor: When copying to clipboard, copy clean HTML rather than the junk Qt produces
  • Version 6.15.1 fixes an issue with the new URL scheme popping up incorrect book details windows

Download Calibre
 
TechNikAl Contributor

New Features​

  • Allow storing extra data files with a book
  • Allow undoing the deletion of books from the calibre library
  • Kobo driver: Add support for the new Kobo Elipsa 2E
  • Book details: if an item has an associated link then offer that link in the item's context menu

Bug Fixes​

  • Content server viewer: Fix end of chapter content being occasionally skipped when scrolling by screen full with multiple pages
  • E-book viewer: Fix a regression that caused notes from a different highlights to be shown in some situations
  • E-book viewer: Show an error if the user tries to search for only punctuation or spaces in the search modes that ignore these
  • Fix custom columns not showing in Book details links from other libraries

Download Calibre
 
TechNikAl Contributor

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

Download Calibre
 
TechNikAl Contributor

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

Download Calibre
 
TechNikAl Contributor

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

Download Calibre
 
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