Today, March 11, 2016, the popular Calibre eBook reader and converter software sees yet another maintenance release, version 2.53, which brings in a bunch of new features and several other improvements.



The biggest new feature of the Calibre 2.53 release is the implementation of a new tool that promises to let users transform book stylings much more quickly, by using easy-to-create rules. Additionally, the Conversion component has been updated to allow users to come up with rules for transforming book styles during conversions.
"For example, you can create rules to change colors in the book or to double the font size of all text in the book, etc. For details, see https://manual.calibre-ebook.com/edit.html#transforming-css-properties," Calibre developer Kovid Goyal explains in the official announcement.
Two other new features landed in Calibre 2.53, persistence support for the "Hide Toolbars" right-click menu item in the Edit Metadata dialog, and an updated portable installer, which now never launches Calibre during automated installs.
Bug fixes, improved news sources As with any new maintenance release of Calibre, this one fixes several bugs that have been reported by users of the previous version of the software. From the changelog attached at the end of the article, we can notice that list numbers for popup footnotes can be hidden in the E-book viewer, which now correctly handles < ![CDATA[ escapes.
Furthermore, the DOCX Input feature now ignores the hidden bookmark added by the Microsoft Word 2010 office suite in the documents, the keyboard focus will no longer be lost when merging book records, and spelling correction suggestions are displayed in the Edit Book component when using the context menu key with the mouse cursor.
Last but not least, the Mediapart news source has been improved in Calibre 2.53, which you can download right now from our website for GNU/Linux, Mac OS X, and Microsoft Windows operating systems. Please consult the changelog below for more details about the changes implemented in this release.


Hide Calibre 2.53 Changelog
New Features

Edit Book: A new tool to transform book styling using easy to create rules.

For example, you can create rules to change colors in the book or to double the font size of all text in the book, etc. For details, see https://manual.calibre-ebook.com/edi...css-properties
Conversion: Allow creating rules to transform styles during conversion, as above. Available in the conversion dialog at 'Look & Feel->Transform style'
Edit metadata dialog: Make the hide toolbars right click menu action persistent. Also fix very large number of custom fields causing the basic metadata tab to not be aligned properly
Portable Installer: Do not ask to launch calibre when running an automated install. Automated installs will now never launch calibre.

Bug Fixes

E-book viewer: Hide list numbers for popup footnotes when the footnotes are use
  • as the number are likely to be incorrect.
    DOCX Input: Ignore the hidden bookmark Word 2010 inserts to enable the go to last edit feature.

    Closes tickets: 1552972
    Fix keyboard focus lost after merging book records
    E-book viewer: Handle Edit Book: Fix spelling correction suggestions not being shown when using the context menu key with the cursor at the end of the word

    Improved news sources

    Mediapart