Answers.Body: <h1>Kobo ereader devices</h1>
  
  <p>My 1<sup>st</sup> gen Kobo Glo has the following fonts pre-installed (I suppose other Kobo devices use the same set; it is possible for the user to <a href="https://ebooks.stackexchange.com/q/444/136">add more</a> but I think this is beyond the scope of your question):</p>
  
  <p><strong>Serif:</strong> <sup>(1)</sup></p>
  
  <ul>
  <li><a href="https://www.fonts.com/font/monotype/amasis" rel="nofollow noreferrer">Amasis</a></li>
  <li><a href="https://www.fonts.com/font/linotype/pmn-caecilia" rel="nofollow noreferrer">Caecilia</a></li>
  <li><a href="https://www.fonts.com/font/microsoft-corporation/georgia" rel="nofollow noreferrer">Georgia</a> <em>(Default Serif font; also default font if nothing is specified in the ebook)</em></li>
  <li>Kobo Nickel</li>
  <li><a href="https://www.fonts.com/font/linotype/malabar" rel="nofollow noreferrer">Malabar</a></li>
  </ul>
  
  <p><strong>Sans Serif:</strong></p>
  
  <ul>
  <li><a href="https://www.fonts.com/font/linotype/avenir-next" rel="nofollow noreferrer">Avenir Next</a> <em>(Default Sans Serif font)</em></li>
  <li><a href="https://www.fonts.com/font/monotype/gill-sans" rel="nofollow noreferrer">Gill Sans</a></li>
  </ul>
  
  <p><strong>Other:</strong></p>
  
  <ul>
  <li>KBJ-TsukuMin Pr6N RB <em>(Serif)</em> <sup>(2)</sup></li>
  <li>KBJ-UDKakugo Pr6N M <em>(Sans Serif)</em> <sup>(2)</sup></li>
  <li><a href="https://en.wikipedia.org/wiki/OpenDyslexic" rel="nofollow noreferrer">OpenDyslexic</a></li>
  </ul>
  
  <p>Of course, these customizations are optional, and it is possible to default fonts as defined inside the ebook.  </p>
  
  <p>About titles, if there are not specific settings inside the ebook stylesheets, they are treated like other text: besides having a larger size, if not explicitly set to something else, the default Georgia is used.</p>
  
  <h1>Kobo app for Android</h1>
  
  <p>Compared to the ereaders, the app is more limited in the customization options:</p>
  
  <ul>
  <li>Default settings</li>
  <li><a href="https://www.fontsquirrel.com/fonts/Droid-Serif" rel="nofollow noreferrer">Droid Serif</a></li>
  <li><a href="https://www.fontsquirrel.com/fonts/droid-sans" rel="nofollow noreferrer">Droid Sans</a></li>
  </ul>
  
  <hr>
  
  <p><em>1. Including slab serif<br>
  2. I'm not really sure but I think that these are used for Chinese/Japanese languages compatibility.</em></p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-04-15T15:37:11.807Z
Answers.Text: Although this is not a complete answer, you answered in the right way -- and provided a template for others to list fonts on other reading systems. This page might actually turn out to be useful as a reference!
Answers.UserDisplayName: idiotprogrammer
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-04-16T04:54:23.670Z
Answers.Text: Glad to be useful. I think that this kind of question calls for a collective answer, everyone posting  the details of their devices :)
Answers.UserDisplayName: Sekhemty
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-04-13T12:25:27.470Z
Answers.LastActivityDate: 2017-04-19T12:59:41.970Z
Answers.LastEditDate: 2017-04-19T12:59:41.970Z
Answers.UserDisplayName: Sekhemty
Answers.Body: <p>Here -- as best as I can tell -- are the system fonts for selected Android reading systems:</p>
  <p><strong>Kindle for Android: (updated 8/2022)</strong></p>
  <ul>
  <li>Amazon Ember Bold (Sans Serif)</li>
  <li><a href="https://en.wikipedia.org/wiki/Bookerly" rel="nofollow noreferrer">Bookerly</a></li>
  <li><a href="https://www.fonts.com/font/linotype/pmn-caecilia" rel="nofollow noreferrer">Caecilia</a></li>
  <li><a href="https://www.fonts.com/font/microsoft-corporation/georgia" rel="nofollow noreferrer">Georgia</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Palatino" rel="nofollow noreferrer">Palatino</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Baskerville" rel="nofollow noreferrer">Baskerville</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Helvetica" rel="nofollow noreferrer">Helvetica</a> (sans-serif)</li>
  <li><a href="https://www.fonts.com/font/urw/lucida?QueryFontType=Web&amp;src=GoogleWebFonts" rel="nofollow noreferrer">Lucida</a></li>
  <li><a href="https://fonts.google.com/specimen/Droid+Serif" rel="nofollow noreferrer">Droid Serif</a></li>
  <li><a href="https://en.wikipedia.org/wiki/OpenDyslexic" rel="nofollow noreferrer">Open Dyslexic</a></li>
  </ul>
  <p><strong>Note:</strong> Kindle/Android does  NOT have an option for the user to select Publisher Defaults.</p>
  <p><strong>Google Play Books:</strong></p>
  <ul>
  <li>Original (?? -- does this mean Publisher Default?)</li>
  <li>Sans (unclear?)</li>
  <li><a href="https://9to5google.com/2015/05/18/google-play-books-default-font-replace-droid-serif/" rel="nofollow noreferrer">Literata</a> -- this is supposed to be the default font on GPB</li>
  <li><a href="https://fonts.google.com/specimen/Merriweather" rel="nofollow noreferrer">Merriweather</a></li>
  <li><a href="https://www.linotype.com/497/goudy-family.html" rel="nofollow noreferrer">Goudy</a></li>
  <li><a href="https://fonts.google.com/specimen/Vollkorn" rel="nofollow noreferrer">Vollkorn</a></li>
  </ul>
  <p><strong>Note:</strong> GPB  does  NOT have an option for the user to select Publisher Defaults (unless it is &quot;Original&quot;)</p>
  <p><strong>Adobe DE for Android</strong></p>
  <ul>
  <li>No fonts available to select</li>
  </ul>
  <p><strong>Overdrive for Android</strong> 3.6.2 (Overdrive is a library reading app which uses a branded version of  Adobe DE reader and its DRM). No information is given about which fonts are the reading system's default for the general terms (&quot;Serif, &quot;Sans-Serif&quot;, etc).</p>
  <ul>
  <li><p>Book Default</p>
  </li>
  <li><p>Sans Serif</p>
  </li>
  <li><p>Serif</p>
  </li>
  <li><p>Monospace</p>
  </li>
  <li><p>Sans serif Bold</p>
  </li>
  <li><p>Serif Bold</p>
  </li>
  <li><p>Monospace Bold</p>
  </li>
  <li><p>OpenDyslexic</p>
  </li>
  <li><p>OpenDyslexic Bold</p>
  </li>
  </ul>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-04T15:55:43.847Z
Answers.Text: It is a bit uncommon to see multiple answers to a question by the same author, may I ask you why you chose to do so? I ask this only for information, just in case :)
Answers.UserDisplayName: Sekhemty
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-04T23:57:15.933Z
Answers.Text: Oh, I wanted to separate by platform.... Probably this would be better as a wiki page, but SE is what it is..
Answers.UserDisplayName: idiotprogrammer
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-08T12:46:24.553Z
Answers.Text: My opinion about this is that it will be better to put different "sections" inside a single answer, maybe with horizontal lines and/or clever use of html headers, instead of having this split on different answers.
Answers.UserDisplayName: Sekhemty
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2017-04-15T15:14:22.780Z
Answers.LastActivityDate: 2022-08-14T16:00:39.343Z
Answers.LastEditDate: 2022-08-14T16:00:39.343Z
Answers.UserDisplayName: idiotprogrammer
Answers.Body: <p><strong>Important Note</strong>: Kindle devices (and possibly apps on ios/android/windows) targeted for non-English speaking countries might have a different set of default fonts. I've seen reports starting in 2016 (<a href="https://ebooks.stackexchange.com/questions/7180/to-upload-my-malayalam-book-in-kindle">here</a> and <a href="https://www.mobileread.com/forums/showthread.php?t=278964" rel="nofollow noreferrer">here</a>) that (unspecified) versions of  Kindles devices for India include Noto Sans (the portion which support the Indian languages). <a href="http://tech.economictimes.indiatimes.com/news/internet/amazon-kindle-launches-e-books-in-5-indian-languages/55723121" rel="nofollow noreferrer">According to reader reports</a>, this started happening with reading devices which were able to receive the  5.8.7 firmware (or higher). That meant Kindle Paperwhites (generation 6 and later).   If you know of other non-European fonts which are included by default  on your device or app, feel free to mention in the comments)</p>
  <p><strong>Kindle 4 (aka Kindle Touch)</strong></p>
  <ul>
  <li><a href="https://www.fonts.com/font/linotype/pmn-caecilia" rel="nofollow noreferrer">Caecilia</a></li>
  <li>Caecilia Condensed</li>
  <li><a href="https://en.wikipedia.org/wiki/Helvetica" rel="nofollow noreferrer">Helvetica</a> -- Sans Serif</li>
  <li>Publisher Font</li>
  </ul>
  <p><strong>Kindle Fire (version unspecified)</strong></p>
  <ul>
  <li><a href="https://en.wikipedia.org/wiki/Arial" rel="nofollow noreferrer">Arial</a> - sans serif</li>
  <li>Baskerville</li>
  <li><a href="https://www.fonts.com/font/linotype/pmn-caecilia" rel="nofollow noreferrer">Caecilia</a></li>
  <li>Courier</li>
  <li>Georgia</li>
  <li>Helvetica - Sans Serif</li>
  <li><a href="https://en.wikipedia.org/wiki/Lucida_Sans_Unicode" rel="nofollow noreferrer">Lucida Sans Unicode</a> - Sans Serif</li>
  <li>Palatino</li>
  <li>Times New Roman</li>
  <li><a href="https://en.wikipedia.org/wiki/Trebuchet_MS" rel="nofollow noreferrer">Trebuchet</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Verdana" rel="nofollow noreferrer">Verdana</a> - Sans Serif</li>
  <li>Bookerly (unsure about which KF versions it appears on?)</li>
  </ul>
  <p>(This info comes from a great Roger Packer article, <a href="http://rogerpacker.com/how-to-choose-typography-for-ebooks/" rel="nofollow noreferrer">How to Choose typography for ebooks</a>). PS, would be nice to know which of these would be the system defaults for serif and sans).</p>
  <p><strong>Fire HD 8</strong></p>
  <ul>
  <li>Bookerly</li>
  <li>Caecilia</li>
  <li>Georgia</li>
  <li>Palatino</li>
  <li>Baskerville</li>
  <li>Helvetica (Sans Serif)</li>
  <li>Helvetica Light (Sans Serif)</li>
  <li>Lucida</li>
  </ul>
  <p>(Info Source: This <a href="https://www.youtube.com/watch?v=i5sp_8BZVlE" rel="nofollow noreferrer">video review of Fire HD 2016</a>).</p>
  <p><strong>Kindle Paperwhite</strong></p>
  <ul>
  <li>Amazon Ember (Sans Serif. 8th generation and after)</li>
  <li>Caecilia</li>
  <li>Caecilia Condensed</li>
  <li>Baskerville</li>
  <li>Futura</li>
  <li>Helvetica (Sans Serif)</li>
  <li>Palatino</li>
  <li>Bookerly (only for 3rd generation and after)</li>
  <li>Publisher Font</li>
  </ul>
  <p>(This info comes from <a href="https://fontsinuse.com/uses/2079/kindle-paperwhite" rel="nofollow noreferrer">this article about 1st gen Paperwhite</a> and <a href="https://www.fastcodesign.com/3049705/the-improved-bookerly-font-is-now-available-for-most-kindles" rel="nofollow noreferrer">this article about Bookerly</a>).</p>
  <p>Several sources report that Kindle Paperwhite (6th generation and later) include  <strong>Korean</strong>: HY Gothic &amp; HY Myeong, <strong>Chinese</strong>: M Ying Hei &amp; ST Heiti &amp; ST Song, <strong>Indic</strong>: Noto Sans Bengali/Devanagari/Gujarati/Kannada/Malayalam/Tamil/Telugu.  (It is unclear to me whether these fonts are installed on all these reading systems or whether they are installed only AFTER the Kindle owner loads an ebook in one of these languages).</p>
  <p><strong>Kindle Basic 7 (7th generation, 2014)</strong></p>
  <ul>
  <li>Baskerville</li>
  <li>Bookerly</li>
  <li>Caecilia</li>
  <li>Caecilia Condensed</li>
  <li>Baskerville</li>
  <li>Futura</li>
  <li>Helvetica (Sans Serif)</li>
  <li>Palatino</li>
  <li>Open Dyslexic</li>
  </ul>
  <p><strong>Kindle Basic 8 (8th generation, 2016)</strong></p>
  <ul>
  <li>Amazon Ember (Sans Serif, see <a href="https://www.youtube.com/watch?v=-2mS--ZqfjA" rel="nofollow noreferrer">this comparison video</a>)</li>
  <li>Baskerville</li>
  <li>Bookerly</li>
  <li>Caecilia</li>
  <li>Caecilia Condensed</li>
  <li>Baskerville</li>
  <li>Futura</li>
  <li>Helvetica (Sans Serif)</li>
  <li>Palatino</li>
  <li>Open Dyslexic</li>
  </ul>
  <p><strong>Kindle Oasis</strong></p>
  <ul>
  <li>Amazon Ember (Sans Serif, see <a href="https://www.youtube.com/watch?v=-2mS--ZqfjA" rel="nofollow noreferrer">this comparison video</a>)</li>
  <li>Amazon Ember Bold</li>
  <li>Baskerville</li>
  <li>Bookerly</li>
  <li>Open Dyslexic</li>
  <li>Palatino</li>
  <li>Publisher Font</li>
  </ul>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-08T13:05:00.133Z
Answers.Text: I updated the page to show your information. For the devices you mentioned, are these fonts already inside, or  are they downloaded from Amazon.com after a person reads a book in one of these languages?
Answers.UserDisplayName: idiotprogrammer
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-22T03:15:13.363Z
Answers.Text: Nemo, this is all great information. I should just say that American editions don't have any of these fonts. Perhaps there is different firmware for different regions.
Answers.UserDisplayName: idiotprogrammer
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2017-04-15T15:35:39.603Z
Answers.LastActivityDate: 2022-08-14T15:53:08.520Z
Answers.LastEditDate: 2022-08-14T15:53:08.520Z
Answers.UserDisplayName: idiotprogrammer
Answers.Body: <p><strong>iBooks (v. 4.10)</strong> </p>
  
  <ul>
  <li><a href="http://www.type-together.com/Athelas" rel="nofollow noreferrer">Athelas</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Bitstream_Charter" rel="nofollow noreferrer">Charter</a></li>
  <li><a href="https://www.fonts.com/font/microsoft-corporation/georgia" rel="nofollow noreferrer">Georgia</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Iowan_Old_Style" rel="nofollow noreferrer">Iowan</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Palatino" rel="nofollow noreferrer">Palatino</a></li>
  <li><a href="https://medium.com/@mach/the-secret-of-san-francisco-fonts-4b5295d9a745" rel="nofollow noreferrer">San Francisco</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Seravek" rel="nofollow noreferrer">Seravek</a> -- Sans Serif</li>
  <li><a href="https://en.wikipedia.org/wiki/Times_New_Roman" rel="nofollow noreferrer">Times New Roman</a></li>
  </ul>
  
  <p><strong>Related:</strong> here's a <a href="http://fontfeed.com/archives/version-1-5-improves-typography-in-ibooks-onipad-and-iphone/" rel="nofollow noreferrer">deep dive into the system iBooks fonts</a> (written in 2011, but still relevant). Here's <a href="http://boingboing.net/2011/12/12/ibooks.html" rel="nofollow noreferrer">another "review" of iBooks fonts</a> (also from 2011). </p>
  
  <p>Please note that as of 6/2017, you cannot embed fonts or have extra fonts show up as options in iBooks unless the <a href="https://github.com/JayPanoz/Soma/wiki/How-to-embed-fonts" rel="nofollow noreferrer">publisher makes small modifications to the package.opf file</a>. If that is done, the embedded font(s) show up as "Original" on the Font settings. </p>
  
  <p><strong>Kindle for IOS</strong> (ipad 1 through iphone 6s)</p>
  
  <ul>
  <li><a href="https://en.wikipedia.org/wiki/Bookerly" rel="nofollow noreferrer">Bookerly</a>  </li>
  <li><a href="https://www.fonts.com/font/linotype/pmn-caecilia" rel="nofollow noreferrer">Caecilia</a></li>
  <li><a href="https://www.fonts.com/font/microsoft-corporation/georgia" rel="nofollow noreferrer">Georgia</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Palatino" rel="nofollow noreferrer">Palatino</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Baskerville" rel="nofollow noreferrer">Baskerville</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Helvetica" rel="nofollow noreferrer">Helvetica</a> (sans-serif)</li>
  <li><a href="https://www.fonts.com/font/urw/lucida?QueryFontType=Web&amp;src=GoogleWebFonts" rel="nofollow noreferrer">Lucida</a>  </li>
  <li><a href="https://fonts.google.com/specimen/Droid+Serif" rel="nofollow noreferrer">Droid Serif</a></li>
  <li><a href="https://en.wikipedia.org/wiki/OpenDyslexic" rel="nofollow noreferrer">Open Dyslexic</a></li>
  <li>Publisher Font</li>
  </ul>
  
  <p><strong>iBooks 3.1.3  ipad 1/ios 5.1.1/</strong> </p>
  
  <ul>
  <li><a href="http://www.type-together.com/Athelas" rel="nofollow noreferrer">Athelas</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Bitstream_Charter" rel="nofollow noreferrer">Charter</a></li>
  <li><a href="https://www.fonts.com/font/microsoft-corporation/georgia" rel="nofollow noreferrer">Georgia</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Iowan_Old_Style" rel="nofollow noreferrer">Iowan</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Palatino" rel="nofollow noreferrer">Palatino</a></li>
  <li><a href="https://medium.com/@mach/the-secret-of-san-francisco-fonts-4b5295d9a745" rel="nofollow noreferrer">San Francisco</a></li>
  <li><a href="https://en.wikipedia.org/wiki/Seravek" rel="nofollow noreferrer">Seravek</a> -- Sans Serif</li>
  <li><a href="https://en.wikipedia.org/wiki/Times_New_Roman" rel="nofollow noreferrer">Times New Roman</a></li>
  </ul>
  
  <p><strong>RELATED</strong>: <a href="http://iosfonts.com/" rel="nofollow noreferrer">Iosfonts.com</a> shows  system fonts for all Apple system devices (although not necessarily iBooks).  </p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-04-16T05:56:30.197Z
Answers.LastActivityDate: 2017-06-24T14:26:02.280Z
Answers.LastEditDate: 2017-06-24T14:26:02.280Z
Answers.UserDisplayName: idiotprogrammer
Answers.Body: <p><strong>Overdrive Libby on Android</strong></p>
  
  <p>Instead of offering fonts to choose from, Libby offer these book design variants:</p>
  
  <ul>
  <li>Publisher's Default</li>
  <li>Legible </li>
  <li>Scholar</li>
  <li>Paperback</li>
  <li>OpenDyslexic</li>
  <li>Custom</li>
  </ul>
  
  <p>If the user chooses "Custom," the following options will appear: </p>
  
  <ul>
  <li><code>--</code> (default)</li>
  <li>Serif</li>
  <li>Sans Serif</li>
  </ul>
  
  <p>(Presumably, the first option includes body font in the SW's default serif and heading fonts in the SW's default sans serif). </p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-10-27T02:18:08.963Z
Answers.LastActivityDate: 2018-10-27T02:18:08.963Z
Answers.UserDisplayName: idiotprogrammer
Body: <p>In epub and kindle css, you can specify a fallback font by specifying </p>
  
  <pre><code> p {font-family: "Georgia", serif}
   h1 {font-family: "Helvetica", sans-serif}
  </code></pre>
  
  <p>If various reading systems have defaults for serif and sans-serif, can you tell me what they are? </p>
  
  <p>I.E. Kindle e-ink, Kindle android app, Google Play Books, ibooks, Kobo, Adobe DE. </p>
  
  <p>On a related question, can I assume that all titles are in the default sans-serif font? When a customer overrides publisher defaults and chooses a certain font (like Bookerly on kindle), does that leave the title fonts still in the default sans-serif? </p>
  
  <p><strong>UPDATE:</strong> Someone on KDP forum has confirmed that user-selected fonts for kindle systems are the same for body fonts and heading font. Therefore, you would need to specify a heading font if you want it to be different. </p>
  
  <p><strong>UPDATE 2</strong> I encourage people to post fonts existing on  the mobile devices or reading systems that they have. Please indicate whether there is an option to specify Publisher Defaults on the reading system. Also, if you have any insight as to which font would be considered the default Serif or Sans Serif choice by the reading system, please mention it.  Thanks! </p>
  
  <p><strong>UPDATE 3 (5/2017)</strong> A commenter has pointed out that some Amazon  Kindle devices are using  fonts for Indic languages written in Bengali/Devanagari/Gujarati/Kannada/Malayalam/Tamil/Telugu. On the device this font is referred to as 
  "Noto Sans."  Noto is a multilingual font developed and supported by Google, but Amazon has only used  portions of this Noto   font for  Indian languages.  I have seen no official announcement yet. </p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-04-13T12:36:40.693Z
Comments.Text: Is there a reason why you tagged the question specifically for epub3? Could this subject be of broader interest and include also previous specifications?
Comments.UserDisplayName: Sekhemty
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-04-16T14:03:27.727Z
Comments.Text: RELATED DISCUSSIONS: https://ebooks.stackexchange.com/questions/879/what-is-the-most-readable-font-for-an-ebook  and https://ebooks.stackexchange.com/questions/7107/need-suggestion-on-selecting-the-font-type-for-self-publishing-book
Comments.UserDisplayName: idiotprogrammer
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-05-08T12:53:01.377Z
Comments.Text: I have updated my comment to reflect your new information. It is clear that it is hard for a Westerner to keep this up to date because these fonts do not appear as options or else they are downloaded only if the reader loads an ebook in one of those Indian languages.
Comments.UserDisplayName: idiotprogrammer
Tags: <kindle><epub><kobo><fonts>
Title: What are serif and sans serif fonts on different ebook reading systems?
UserDisplayName: idiotprogrammer
ThreadText: # What are serif and sans serif fonts on different ebook reading systems?
  
  (Asked by: username_0 on 2017-04-10)
  
  In epub and kindle css, you can specify a fallback font by specifying 
   p {font-family: "Georgia", serif}
   h1 {font-family: "Helvetica", sans-serif}
  
  If various reading systems have defaults for serif and sans-serif, can you tell me what they are? 
  I.E. Kindle e-ink, Kindle android app, Google Play Books, ibooks, Kobo, Adobe DE. 
  On a related question, can I assume that all titles are in the default sans-serif font? When a customer overrides publisher defaults and chooses a certain font (like Bookerly on kindle), does that leave the title fonts still in the default sans-serif? 
  UPDATE: Someone on KDP forum has confirmed that user-selected fonts for kindle systems are the same for body fonts and heading font. Therefore, you would need to specify a heading font if you want it to be different. 
  UPDATE 2 I encourage people to post fonts existing on  the mobile devices or reading systems that they have. Please indicate whether there is an option to specify Publisher Defaults on the reading system. Also, if you have any insight as to which font would be considered the default Serif or Sans Serif choice by the reading system, please mention it.  Thanks! 
  UPDATE 3 (5/2017) A commenter has pointed out that some Amazon  Kindle devices are using  fonts for Indic languages written in Bengali/Devanagari/Gujarati/Kannada/Malayalam/Tamil/Telugu. On the device this font is referred to as 
  "Noto Sans."  Noto is a multilingual font developed and supported by Google, but Amazon has only used  portions of this Noto   font for  Indian languages.  I have seen no official announcement yet.
  
  **Tags:** kindle, epub, kobo, fonts
  
  > **Comments:**
  > **username_1**: Is there a reason why you tagged the question specifically for epub3? Could this subject be of broader interest and include also previous specifications?  
  > **username_0**: RELATED DISCUSSIONS: https://ebooks.stackexchange.com/questions/879/what-is-the-most-readable-font-for-an-ebook  and https://ebooks.stackexchange.com/questions/7107/need-suggestion-on-selecting-the-font-type-for-self-publishing-book  
  > **username_0**: I have updated my comment to reflect your new information. It is clear that it is hard for a Westerner to keep this up to date because these fonts do not appear as options or else they are downloaded only if the reader loads an ebook in one of those Indian languages.  
  
  ---
  
  ## 5 answers
  
  ### Answer by username_1 on 2017-04-13. Score: 4 | Accepted answer
  
  # Kobo ereader devices
  
  My 1st gen Kobo Glo has the following fonts pre-installed (I suppose other Kobo devices use the same set; it is possible for the user to [add more](https://ebooks.stackexchange.com/q/444/136) but I think this is beyond the scope of your question):
  
  **Serif:** (1)
  
  * [Amasis](https://www.fonts.com/font/monotype/amasis)
  * [Caecilia](https://www.fonts.com/font/linotype/pmn-caecilia)
  * [Georgia](https://www.fonts.com/font/microsoft-corporation/georgia) *(Default Serif font; also default font if nothing is specified in the ebook)*
  * Kobo Nickel
  * [Malabar](https://www.fonts.com/font/linotype/malabar)
  
  **Sans Serif:**
  
  * [Avenir Next](https://www.fonts.com/font/linotype/avenir-next) *(Default Sans Serif font)*
  * [Gill Sans](https://www.fonts.com/font/monotype/gill-sans)
  
  **Other:**
  
  * KBJ-TsukuMin Pr6N RB *(Serif)* (2)
  * KBJ-UDKakugo Pr6N M *(Sans Serif)* (2)
  * [OpenDyslexic](https://en.wikipedia.org/wiki/OpenDyslexic)
  
  Of course, these customizations are optional, and it is possible to default fonts as defined inside the ebook.
  
  About titles, if there are not specific settings inside the ebook stylesheets, they are treated like other text: besides having a larger size, if not explicitly set to something else, the default Georgia is used.
  
  # Kobo app for Android
  
  Compared to the ereaders, the app is more limited in the customization options:
  
  * Default settings
  * [Droid Serif](https://www.fontsquirrel.com/fonts/Droid-Serif)
  * [Droid Sans](https://www.fontsquirrel.com/fonts/droid-sans)
  
  ---
  
  *1. Including slab serif  
  2. I'm not really sure but I think that these are used for Chinese/Japanese languages compatibility.*
  
  > **Comments:**
  > **username_0**: Although this is not a complete answer, you answered in the right way -- and provided a template for others to list fonts on other reading systems. This page might actually turn out to be useful as a reference!  
  > **username_1**: Glad to be useful. I think that this kind of question calls for a collective answer, everyone posting  the details of their devices :)  
  
  ---
  
  ### Answer by username_0 on 2017-04-15. Score: 3
  
  Here -- as best as I can tell -- are the system fonts for selected Android reading systems:
  
  **Kindle for Android: (updated 8/2022)**
  
  * Amazon Ember Bold (Sans Serif)
  * [Bookerly](https://en.wikipedia.org/wiki/Bookerly)
  * [Caecilia](https://www.fonts.com/font/linotype/pmn-caecilia)
  * [Georgia](https://www.fonts.com/font/microsoft-corporation/georgia)
  * [Palatino](https://en.wikipedia.org/wiki/Palatino)
  * [Baskerville](https://en.wikipedia.org/wiki/Baskerville)
  * [Helvetica](https://en.wikipedia.org/wiki/Helvetica) (sans-serif)
  * [Lucida](https://www.fonts.com/font/urw/lucida?QueryFontType=Web&src=GoogleWebFonts)
  * [Droid Serif](https://fonts.google.com/specimen/Droid+Serif)
  * [Open Dyslexic](https://en.wikipedia.org/wiki/OpenDyslexic)
  
  **Note:** Kindle/Android does NOT have an option for the user to select Publisher Defaults.
  
  **Google Play Books:**
  
  * Original (?? -- does this mean Publisher Default?)
  * Sans (unclear?)
  * [Literata](https://9to5google.com/2015/05/18/google-play-books-default-font-replace-droid-serif/) -- this is supposed to be the default font on GPB
  * [Merriweather](https://fonts.google.com/specimen/Merriweather)
  * [Goudy](https://www.linotype.com/497/goudy-family.html)
  * [Vollkorn](https://fonts.google.com/specimen/Vollkorn)
  
  **Note:** GPB does NOT have an option for the user to select Publisher Defaults (unless it is "Original")
  
  **Adobe DE for Android**
  
  * No fonts available to select
  
  **Overdrive for Android** 3.6.2 (Overdrive is a library reading app which uses a branded version of Adobe DE reader and its DRM). No information is given about which fonts are the reading system's default for the general terms ("Serif, "Sans-Serif", etc).
  
  * Book Default
  * Sans Serif
  * Serif
  * Monospace
  * Sans serif Bold
  * Serif Bold
  * Monospace Bold
  * OpenDyslexic
  * OpenDyslexic Bold
  
  > **Comments:**
  > **username_1**: It is a bit uncommon to see multiple answers to a question by the same author, may I ask you why you chose to do so? I ask this only for information, just in case :)  
  > **username_0**: Oh, I wanted to separate by platform.... Probably this would be better as a wiki page, but SE is what it is..  
  > **username_1**: My opinion about this is that it will be better to put different "sections" inside a single answer, maybe with horizontal lines and/or clever use of html headers, instead of having this split on different answers.  
  
  ---
  
  ### Answer by username_0 on 2017-04-15. Score: 2
  
  **Important Note**: Kindle devices (and possibly apps on ios/android/windows) targeted for non-English speaking countries might have a different set of default fonts. I've seen reports starting in 2016 ([here](https://ebooks.stackexchange.com/questions/7180/to-upload-my-malayalam-book-in-kindle) and [here](https://www.mobileread.com/forums/showthread.php?t=278964)) that (unspecified) versions of Kindles devices for India include Noto Sans (the portion which support the Indian languages). [According to reader reports](http://tech.economictimes.indiatimes.com/news/internet/amazon-kindle-launches-e-books-in-5-indian-languages/55723121), this started happening with reading devices which were able to receive the 5.8.7 firmware (or higher). That meant Kindle Paperwhites (generation 6 and later). If you know of other non-European fonts which are included by default on your device or app, feel free to mention in the comments)
  
  **Kindle 4 (aka Kindle Touch)**
  
  * [Caecilia](https://www.fonts.com/font/linotype/pmn-caecilia)
  * Caecilia Condensed
  * [Helvetica](https://en.wikipedia.org/wiki/Helvetica) -- Sans Serif
  * Publisher Font
  
  **Kindle Fire (version unspecified)**
  
  * [Arial](https://en.wikipedia.org/wiki/Arial) - sans serif
  * Baskerville
  * [Caecilia](https://www.fonts.com/font/linotype/pmn-caecilia)
  * Courier
  * Georgia
  * Helvetica - Sans Serif
  * [Lucida Sans Unicode](https://en.wikipedia.org/wiki/Lucida_Sans_Unicode) - Sans Serif
  * Palatino
  * Times New Roman
  * [Trebuchet](https://en.wikipedia.org/wiki/Trebuchet_MS)
  * [Verdana](https://en.wikipedia.org/wiki/Verdana) - Sans Serif
  * Bookerly (unsure about which KF versions it appears on?)
  
  (This info comes from a great Roger Packer article, [How to Choose typography for ebooks](http://rogerpacker.com/how-to-choose-typography-for-ebooks/)). PS, would be nice to know which of these would be the system defaults for serif and sans).
  
  **Fire HD 8**
  
  * Bookerly
  * Caecilia
  * Georgia
  * Palatino
  * Baskerville
  * Helvetica (Sans Serif)
  * Helvetica Light (Sans Serif)
  * Lucida
  
  (Info Source: This [video review of Fire HD 2016](https://www.youtube.com/watch?v=i5sp_8BZVlE)).
  
  **Kindle Paperwhite**
  
  * Amazon Ember (Sans Serif. 8th generation and after)
  * Caecilia
  * Caecilia Condensed
  * Baskerville
  * Futura
  * Helvetica (Sans Serif)
  * Palatino
  * Bookerly (only for 3rd generation and after)
  * Publisher Font
  
  (This info comes from [this article about 1st gen Paperwhite](https://fontsinuse.com/uses/2079/kindle-paperwhite) and [this article about Bookerly](https://www.fastcodesign.com/3049705/the-improved-bookerly-font-is-now-available-for-most-kindles)).
  
  Several sources report that Kindle Paperwhite (6th generation and later) include **Korean**: HY Gothic & HY Myeong, **Chinese**: M Ying Hei & ST Heiti & ST Song, **Indic**: Noto Sans Bengali/Devanagari/Gujarati/Kannada/Malayalam/Tamil/Telugu. (It is unclear to me whether these fonts are installed on all these reading systems or whether they are installed only AFTER the Kindle owner loads an ebook in one of these languages).
  
  **Kindle Basic 7 (7th generation, 2014)**
  
  * Baskerville
  * Bookerly
  * Caecilia
  * Caecilia Condensed
  * Baskerville
  * Futura
  * Helvetica (Sans Serif)
  * Palatino
  * Open Dyslexic
  
  **Kindle Basic 8 (8th generation, 2016)**
  
  * Amazon Ember (Sans Serif, see [this comparison video](https://www.youtube.com/watch?v=-2mS--ZqfjA))
  * Baskerville
  * Bookerly
  * Caecilia
  * Caecilia Condensed
  * Baskerville
  * Futura
  * Helvetica (Sans Serif)
  * Palatino
  * Open Dyslexic
  
  **Kindle Oasis**
  
  * Amazon Ember (Sans Serif, see [this comparison video](https://www.youtube.com/watch?v=-2mS--ZqfjA))
  * Amazon Ember Bold
  * Baskerville
  * Bookerly
  * Open Dyslexic
  * Palatino
  * Publisher Font
  
  > **Comments:**
  > **username_0**: I updated the page to show your information. For the devices you mentioned, are these fonts already inside, or  are they downloaded from Amazon.com after a person reads a book in one of these languages?  
  > **username_0**: Nemo, this is all great information. I should just say that American editions don't have any of these fonts. Perhaps there is different firmware for different regions.  
  
  ---
  
  ### Answer by username_0 on 2017-04-16. Score: 2
  
  **iBooks (v. 4.10)**
  
  * [Athelas](http://www.type-together.com/Athelas)
  * [Charter](https://en.wikipedia.org/wiki/Bitstream_Charter)
  * [Georgia](https://www.fonts.com/font/microsoft-corporation/georgia)
  * [Iowan](https://en.wikipedia.org/wiki/Iowan_Old_Style)
  * [Palatino](https://en.wikipedia.org/wiki/Palatino)
  * [San Francisco](https://medium.com/@mach/the-secret-of-san-francisco-fonts-4b5295d9a745)
  * [Seravek](https://en.wikipedia.org/wiki/Seravek) -- Sans Serif
  * [Times New Roman](https://en.wikipedia.org/wiki/Times_New_Roman)
  
  **Related:** here's a [deep dive into the system iBooks fonts](http://fontfeed.com/archives/version-1-5-improves-typography-in-ibooks-onipad-and-iphone/) (written in 2011, but still relevant). Here's [another "review" of iBooks fonts](http://boingboing.net/2011/12/12/ibooks.html) (also from 2011).
  
  Please note that as of 6/2017, you cannot embed fonts or have extra fonts show up as options in iBooks unless the [publisher makes small modifications to the package.opf file](https://github.com/JayPanoz/Soma/wiki/How-to-embed-fonts). If that is done, the embedded font(s) show up as "Original" on the Font settings.
  
  **Kindle for IOS** (ipad 1 through iphone 6s)
  
  * [Bookerly](https://en.wikipedia.org/wiki/Bookerly)
  * [Caecilia](https://www.fonts.com/font/linotype/pmn-caecilia)
  * [Georgia](https://www.fonts.com/font/microsoft-corporation/georgia)
  * [Palatino](https://en.wikipedia.org/wiki/Palatino)
  * [Baskerville](https://en.wikipedia.org/wiki/Baskerville)
  * [Helvetica](https://en.wikipedia.org/wiki/Helvetica) (sans-serif)
  * [Lucida](https://www.fonts.com/font/urw/lucida?QueryFontType=Web&src=GoogleWebFonts)
  * [Droid Serif](https://fonts.google.com/specimen/Droid+Serif)
  * [Open Dyslexic](https://en.wikipedia.org/wiki/OpenDyslexic)
  * Publisher Font
  
  **iBooks 3.1.3 ipad 1/ios 5.1.1/**
  
  * [Athelas](http://www.type-together.com/Athelas)
  * [Charter](https://en.wikipedia.org/wiki/Bitstream_Charter)
  * [Georgia](https://www.fonts.com/font/microsoft-corporation/georgia)
  * [Iowan](https://en.wikipedia.org/wiki/Iowan_Old_Style)
  * [Palatino](https://en.wikipedia.org/wiki/Palatino)
  * [San Francisco](https://medium.com/@mach/the-secret-of-san-francisco-fonts-4b5295d9a745)
  * [Seravek](https://en.wikipedia.org/wiki/Seravek) -- Sans Serif
  * [Times New Roman](https://en.wikipedia.org/wiki/Times_New_Roman)
  
  **RELATED**: [Iosfonts.com](http://iosfonts.com/) shows system fonts for all Apple system devices (although not necessarily iBooks).
  
  
  ---
  
  ### Answer by username_0 on 2018-10-27. Score: 0
  
  **Overdrive Libby on Android**
  
  Instead of offering fonts to choose from, Libby offer these book design variants:
  
  * Publisher's Default
  * Legible
  * Scholar
  * Paperback
  * OpenDyslexic
  * Custom
  
  If the user chooses "Custom," the following options will appear:
  
  * `--` (default)
  * Serif
  * Sans Serif
  
  (Presumably, the first option includes body font in the SW's default serif and heading fonts in the SW's default sans serif).
  
  
  ---
  
  