Calibre 4.2

Calibre is an open source e-book library management application that enables you to manage your e-book collection, convert e-books between different formats, synchronize with popular e-book reader devices, and read your e-books with the included viewer.

It acts as an e-library and also allows for format conversion, news feeds to e-book conversion, as well as e-book reader sync features and an integrated e-book viewer.

Calibre"s features include: library management; format conversion (all major ebook formats); syncing to e-book reader devices; fetching news from the Web and converting it into ebook form; viewing many different e-book formats, giving you access to your book collection over the internet using just a browser.

Calibre 4.2 new features:

macOS: Various improvements to dark mode support
Viewer: Dont generate covers for books that dont have a cover. Note that because of this all previously opened books will again be prepared for first time reading.
Viewer: Restore print to PDF functionality
Viewer: Allow also jumping to book positions in Goto->Location
Content server: When adding books and a duplicate is suspected provide more information about what books match the duplicate
FB2 Output: Speed up conversion of images and handle external links
Viewer: If the book has no ToC try to generate one from headings, if any. Closes tickets: 1847277
Viewer: Improve rendering of comics. No blank pages after large images or after every image in multi-page mode.
Viewer: Make it easier to use the bookmarks panel with only keyboard. Closes tickets: 1847423
Viewer: Set the classes calibre-viewer-paginated and calibre-viewer-scrolling on the
tag in Paged and Flow modes. This allows the User styles to target these modes, if needed. Closes tickets: 1847427
Viewer: Use the same loading spinner as is used by the rest of calibre

Bug fixes:

Edit book: Fix a crash when editing CSS files caused by a behavior change in Qt 5.13. Closes tickets: 1846760
Fix a regression in 4.0 that broke rendering of PDF covers for PDF files that used JPEG2000 compression. Closes tickets: 1847567
Viewer: Fix a regression in 4.1 that broke creating new color schemes Closes tickets: 1847407
Viewer: Fix error while viewing books with a comment after a tag. Closes tickets: 1847977
Viewer: Fix an error when processing a CFI with an invalid text offset. Closes tickets: 1848320
Viewer: Fix scrolling backwards to previous chapter not always scrolling to the end of the chapter, if the chapter loads external resources. Closes tickets: 1847818
Viewer: Fix hang on books with namespaced attributes on that do not belong to a known ebook namespace. Closes tickets: 1846886
Viewer: Fix search history not persisting between viewer restarts. Closes tickets: 1847976
Viewer: Fix scrollbar showing up on initial book open even if disabled in preferences. Closes tickets: 1847323
Viewer: Fix rendering of books with mathematics failing
Viewer: When changing between individual sections/chapters in the book, only render the new chapter after loading is complete
Viewer: Fix scrolling by screenfuls not working correctly in flow mode
EPUB 2 metadata: Fix obfuscated fonts being broken when updating metadata if the file uses Adobe font obfuscation and the identifier with the key has an uppercase UUID scheme name. Closes tickets: 1847890
Viewer: Fix right clicking on margins not showing controls
Viewer: Preselect text in search box when showing it. Closes tickets: 1847677
Viewer: Fix SVG images that use xlink:href to refer to paths not being displayed. Closes tickets: 1847181
Content server: Fix detection of iOS on iPAD with iOS 13 which defaults to desktop mode
Metadata jacket: Fix
tags in the comments not being rendered correctly when inserting the comments into the jacket page. Closes tickets: 1848327
Viewer: Show nicer error message for DRMed books. Closes tickets: 1847468
Viewer: Fix preferences under Scrolling behavior not being saved correctly
Viewer: Fix remembered position sometimes off by one page in paged mode. Closes tickets: 1847322
Viewer: restrict max size of margin page turn indicators to 25px rather than 75px
Viewer: Dont flash the home page before loading a book if a book has been specified
Viewer: Fix ctrl+m shortcut not working on windows
Content server: Fix regression that caused series name in book details view not not be blue to indicate it is clickable

Improved news sources:

Various Polish news sources
Il Sole 24 Ore

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