Bookerly is a serif typeface designed by Dalton Maag as an exclusive font for reading on Amazon's Kindle devices and apps. Combined with a new typesetting engine, Amazon.com asserts that the font helps the user "read faster with less eyestrain." The font includes ligatures and kerning pairs. 
Bookerly replaces Caecilia as the default font for the 2015 Kindle Paperwhite (3rd generation) and it will be used as the default font on Amazon's future e-readers. The Bookerly font was added to many of the older Kindle devices via firmware updates.
The Amazon Kindle is a series of e-readers designed and marketed by Amazon. Amazon Kindle devices enable users to browse, buy, download, and read e-books, newspapers, magazines and other digital media via wireless networking to the Kindle Store. The hardware platform, developed by Amazon subsidiary Lab126, began as a single device in 2007 and now comprises a range of devices, including e-readers with E Ink electronic paper displays and Kindle applications on all major computing platforms. All Kindle devices integrate with Kindle Store content, and as of March 2018, the store has over six million e-books available in the United States.Dalton Maag
Dalton Maag is an independent font foundry with offices in London, UK, and São Paulo, Brazil. It designs fonts for use in corporate identities, logos, and other text uses. Dalton Maag has a library of 30 retail fonts as of 2016 and offers custom font creation and modification services to its clients.E-book
An electronic book, also known as an e-book or eBook, is a book publication made available in digital form, consisting of text, images, or both, readable on the flat-panel display of computers or other electronic devices. Although sometimes defined as "an electronic version of a printed book", some e-books exist without a printed equivalent. E-books can be read on dedicated e-reader devices, but also on any computer device that features a controllable viewing screen, including desktop computers, laptops, tablets and smartphones.
In the 2000s, there was a trend of print and e-book sales moving to the Internet, where readers buy traditional paper books and e-books on websites using e-commerce systems. With print books, readers are increasingly browsing through images of the covers of books on publisher or bookstore websites and selecting and ordering titles online; the paper books are then delivered to the reader by mail or another delivery service. With e-books, users can browse through titles online, and then when they select and order titles, the e-book can be sent to them online or the user can download the e-book. At the start of 2012 in the U.S., more e-books were published online than were distributed in hardcover.The main reasons for people buying e-books online are possibly lower prices, increased comfort (as they can buy from home or on the go with mobile devices) and a larger selection of titles. With e-books, "[e]lectronic bookmarks make referencing easier, and e-book readers may allow the user to annotate pages." "Although fiction and non-fiction books come in e-book formats, technical material is especially suited for e-book delivery because it can be [electronically] searched" for keywords. In addition, for programming books, code examples can be copied. The amount of e-book reading is increasing in the U.S.; by 2014, 28% of adults had read an e-book, compared to 23% in 2013. This is increasing, because by 2014 50% of American adults had an e-reader or a tablet, compared to 30% owning such devices in 2013.List of serif typefaces
This list of samples of serif typefaces details standard serif fonts used in printing, classical typesetting and printing.Literata
Literata is an old-style serif typeface commissioned by Google and designed by the independent type foundry TypeTogether. It was released in 2015 and is the default font family in Google Play Books, since version 3.4.5. The typeface was intended to establish a unique visual identity for the Play Books app, suitable across a wide variety of screen sizes, resolutions, and rendering software. The designers went back to the old-style Roman and Scotch typefaces for inspiration.Literata initially included two different weights (regular and bold) and corresponding upright italicised variations. Version 2.1 named Literata Book added an additional two different weights (medium and semibold), small caps and made cap-height numerals the default.It includes support for full extended Latin, Polytonic Greek, and Cyrillic scripts. Compared to Play Books' former default font Droid Serif, Literata has a lower x-height and higher ascenders.On 7 December 2018, Literata was open-sourced under the SIL Open Font License and released on GitHub.