Summary: Even though handling of PDFs is poor, Bookworm is the best all-round eBook reader app on Ubuntu. PDF rendering is pretty poor, however, and the app lacks proper tools for page zoom, dual page, etc that dedicated apps like Evince (for. Options to customise the reader appearance.Lets you edit metadata, including cover art.Other toolbar options allow you to view a table of contents (should there be one), bookmark a page, and search for text or phases.

You can use your keyboard arrow keys to advance to the next/prev page, or drag the scrubber along the progress slider displayed at the bottom of the window. The clean, uncluttered UI of Bookworm helps keep focus squarely on the content. The app includes 3 separate profile themes: light (pictured), sepia, and dark, which layers white text over a dark background.

Hi JSWolf, yeah, agree, will need to spend some time figuring out which element it is in the qss file and make the change accordingly.When reading an ePub or mobi book you can increase/decrease the font size, adjust the margins, tweak the line height and change the background/text color using a handy pop-over menu in the Bookworm toolbar. If you have other suggestions, please do let me know, I am more than eager to try out. Hence my attempt to make the qss-related change. This is more like a Windows problem which doesn't give you an easy way to theme it down to individual widgets, unlike Linux. I read from somewhere that someone manage to change the background color of many applications to dark by changing settings in the registry, but that is a path I don't want to go down.

We have the option to change theme to a high contrast theme, which does turn the background of applications dark, but then it makes the color of every other element looks not very pleasant. Background color for taskbars and some other elements do go dark, but not all. after selecting dark mode, the background for programs like notepad, file explorer etc, including Calibre (with interface style set to system default) are still light. It will change certain elements to have a dark background, but not all. I am running on the Windows 10 anniversary update (1607) which includes an option to switch it to Dark mode. Hi Kovid, setting the interface style to system default in Calibre won't change the background to dark. Those changes are only in my own environment. Hi Zakky, I did it by changing a couple of lines of code in a development environment.

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