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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.

Any version of Calibre distributed on Uptodown is completely virus-free and free to download at no cost. 5.16.1 Apr 19th, 2021. 5.14.0 Mar 29th, 2021. 5.13.0 Mar 10th.

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 5.14.0 new features:

Allow auto scrolling through the list of books by pressing the X key or right clicking on the cover browser. Closes tickets: 1917634
Useful to have a 'slideshow' of book covers. The speed of scrolling can be controlled in Preferences->Look & feel->Cover browser
E-book viewer: Speed up first time open for EPUB files with lots of styling
E-book viewer preferences: Allow searching for keyboard shortcuts
Edit book: Allow editing WEBP images
Various improvements to the template language, see https://www.mobileread.com/forums/showthread.php?t=337573
E-book viewer: Show the current progress percentage in the bottom bar of the viewer controls. This can be customized in the viewer preferences under Headers and footers. Closes tickets: 1921610
E-book viewer: Add an option under Preferences->Miscellaneous to not restore open panels such as Search, Table of Contents etc on restart. Closes tickets: 1921689
When exporting highlights as text or markdown also output top level chapter titles
Allow downloading metadata from amazon.se. Closes tickets: 1922327
Preferences->Tweaks: Allow specifying that calibre should open the book details window when double clicking on a book. Closes tickets: 1922591
MOBI Output: Convert WebP images to PNG so they work with Amazon's software. Closes tickets: 1922341
DOCX Input: When converting embedded fonts, replace spaces in the filename with underscores to keep the execrable epubcheck happy. Closes tickets: 1921793
E-book viewer: Selection bar: Add keyboard shortcuts for all buttons. Hover over a button in the bar to see the shortcut

Calibre On-Demand Training Library. The Calibre library contains a collection of learning paths that will help you master using the tools and the development of application-specific code.
Calibre is a great tool to help you manage your eBooks, so here are some tips and tricks to get the most out of it. Exporting Your Calibre eBook Library If you’re worried about your eBook collection, or you just want to share it with other users, you can export your Calibre eBook library using Calibre’s own export tool.

Bug fixes:

tag, as it is pointless and causes the execrable epubcheck to complain. Closes tickets: 1922570

FB2 Output: Fix a regression in calibre 5 that caused paragraphs containing only non-breaking spaces to be removed. Closes tickets: 1924232
Metadata comments editor: Fix setting block alignment destroying other block level properties. Closes tickets: 1924187
E-book viewer: Fix margins not being adjusted immediately when preferences are changed
Edit book: Upgrade book internals: Fix skipping the NCX removal dialog not remembering the chosen option. Closes tickets: 1921604
Conversion: When specifying a line-height do not apply it to the
E-book viewer: Improve scrolling behavior when extending the selection using keyboard shortcuts
E-book viewer: Fix read percent for HTML files that are rendered in a single screen being 0% rather than 100%
E-book viewer: Highlights panel: Do not expand all sections when adding/deleting/modifying highlights. Closes tickets: 1924598
CHM Input: Fix a regression in calibre 5.0 that broke opening of some files that dont specify a character encoding. Closes tickets: 1922503
EPUB2 metadata: Read ISBNs in identifier elements without schemes if they are valid ISBNs and no properly identified isbns are present
Update Amazon metadata plugin for changes to amazon websites. Closes tickets: 1922309
Edit book: Fix detection of class names containing hyphens/underscores

New news sources:

Los Danieles – Columnas sin techo by CAVALENCIA

Improved news sources:

New Scientist
Irish Times
1843
The Straits Times

Calibre 5.16.1 fixes:

CHM Input: Fix handling of some CHM files that use non-ASCII internal filenames and dont specify a character encoding in their metadata. Closes tickets: 1924703
Fix a regression in the previous release that prevented calibre from starting if there was a failure in a third party plugin. Closes tickets: 1924824
Content server viewer: Fix a regression in the previous that broke handling of URLs in stylesheets
Fix a regression in the previous release that broke changing sections in the convert single book dialog after changing the input or output formats. Closes tickets: 1924767
Fix using 'is set' rules not working for column rules with rating values. Closes tickets: 1924675
E-book viewer: Fix a regression in 5.15 that causes the viewer to ignore page-break CSS properties (in 5.16.1) Fifa 16 online key generator.
Fix a regression that broke using stored templates (in 5.16.1)
Fix auto scroll books shortcut not working in standalone cover browser window (in 5.16.1). Closes tickets: 1924875
E-book viewer: Fix jumping to previous section sometimes not working in flow mode (in 5.16.1). Closes tickets: 1924890
E-book viewer: Fix a regression in 5.15 that broke changing keyboard shortcuts in the viewer preferences (in 5.16.1). Closes tickets: 1924853
E-book viewer: Fix a regression in 5.15 that broke using the delete key to delete highlights (in 5.16.1)

New news sources

Calibre Get Metadata

The Saturday paper by Alistair Francis
Crikey by Alistair Francis

Improved news sources

Calibre For Linux

Granta
New Scientist

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