Calibre is an e-book library management application, viewer and editor. It's also commonly used for e-book file format conversion and syncing to reader devices. Calibre also simplifies downloading news from the web and converting them into e-book form, and can act as content server for online access to your book collection.
minor feature: Release: 5.3 16 Oct, 2020 New features Tag browser: When grouping items by first letter if adjacent letters have few entries combine them into a single group.Can be controlled via an option in Preferences- gt;Look amp; fee- gt;Tag browser to combine 'first letters' together if there are a small number of items under adjacent letters.Viewer: Allow displaying the current page / total pages in the header/footer. Useful in paged mode to see exactly how many pages are left.Viewer search panel: Show more result context in a tooltip when hovering over a search result.DOCX Input: Add support for Word controls used to rotate or flip imagesOnly works with output formats such as EPUB that support CSS transforms.Viewer image pop-up: Allow maximizing/minimizing the window.Edit metadata dialog: Use only a single line for custom column date fields.Add an item to search for categories to the category editor context menu.Category editor: Add a right click menu to change case of the selected entries.a regression in 5.0 that caused performance of dialogs that contain title/series/tags edit fields to be very poor with large libraries.a regression in 5.0 that caused some pop-up menus to appear on the wrong monitor in multi-monitor setups.macOS: a long standing that prevented drag and drop of multiple items.Windows: a regression that broke scanning for default programs for the Open with action.Windows: a regression in 5.0 causing some MOBI files with non-BMP characters not being processed correctly.E-book viewer: scrolling past the end of chapter boundaries not working in books that have negative margins.Edit metadata dialog: incorrect rendering of custom column names that start with emoji.Quickview: nothing shown after clearing the search.Dark mode: radio buttons having no outline.Annotations browser: When showing a book in the calibre library that is not currently visible, display an error.New news sources.Deutsche Welle by VoHeImproved news sources.Reuters