Importing Custom Font (From Local File)

ghastmxn · 10-13-2024, 04:26 PM

I'm trying to change my e-book's font to OpenDyslexic, a font I found online.

https://opendyslexic.org/

I can't figure out how to get it to work. I'm trying to edit an .epub file.

I imported the font through Preferences>Common options>Embed Font Family

@font-face {
font-family: "OpenDyslexic";
src: url(fonts/OpenDyslexic-Regular.otf);
}

I added the @font-face thingy in a couple of different ways.

I'm getting the error "Unexpected missing generic font family"

I tried messing with the content.opf, but I have no idea what I'm doing.
None of the book appears in the font that I want on the E-book viewer on PC.

I just want my flipping font.

This is my first time using Calibre. I don't even know CSS very well or HTML (a little knowledge, but very small).

It would be even more helpful if someone told me how to include rules so I don't have to do this for every book.

Side note: I don't have dyslexia. I have ADHD. In middle school, I found that using this font helped me focus more on reader which motivated to read more.

I did download the font.

Karellen · 10-13-2024, 06:06 PM

Quote:

Originally Posted by ghastmxn

I'm getting the error "Unexpected missing generic font family"

That just means you have not specified a fallback font

You have added this...
@font-face {
font-family: "OpenDyslexic";
src: url(fonts/OpenDyslexic-Regular.otf);
}

Then you need to specify where the font is used. It is not enough just to embed the font file.

If you want the whole book, I would add it under the <body> tag
body {
display: block;
font-family: "OpenDyslexic", serif;
font-size: 1em;
margin: 0 0 0 0;
padding: 0 0 0 0;
}

Check my post here and download the epub... https://www.mobileread.com/forums/sh...76#post4458576

DNSB · 10-13-2024, 06:08 PM

I've attached a test file with OpenDyslexic Regular, Italic, Bold and Bold-Italic embedded. This works on my Kobo Sage though you have to remember when using an embedded font to set the Aa font to Published Default.

Basically, you need the 4 font files, the font-face and font-family bits and bobs as mentioned by Karellen. The other item is that I created my test file with Sigil so it uses several directories to store various items.

Quoth · 10-14-2024, 06:24 AM

Elephant in room: Open Dyslexic is an Arts Project. No evidence it helps anyone (Dyslexic of ADHD), but there is evidence it is harder to read than simply increasing size.

Otherwise, there is no problem embedding a font as Karellen & DNSB write.

However some Android apps have no "publisher" font option. Conversion to azw3 will work, but four models of Kindle, (K1, K2, DX and DXG) can't be upgraded to azw3 and old mobi neither supports user added fonts or embedded fonts.

If the device has the font (either supplied or added by user in designated location), then the CSS is similar but the font doesn't need embedded.

There are periodical arguments about serif vs sans and it turns out it may be what ever you are used to works best. So if paperback fiction then serif such as Georgia or Times and if web pages and Apps then sans such as Arial or Verdana, or the Google/Android versions.

JSWolf · 10-14-2024, 08:14 AM

Quote:

Originally Posted by Quoth

Elephant in room: Open Dyslexic is an Arts Project. No evidence it helps anyone (Dyslexic of ADHD), but there is evidence it is harder to read than simply increasing size.

Otherwise, there is no problem embedding a font as Karellen & DNSB write.

However some Android apps have no "publisher" font option. Conversion to azw3 will work, but four models of Kindle, (K1, K2, DX and DXG) can't be upgraded to azw3 and old mobi neither supports user added fonts or embedded fonts.

If the device has the font (either supplied or added by user in designated location), then the CSS is similar but the font doesn't need embedded.

There are periodical arguments about serif vs sans and it turns out it may be what ever you are used to works best. So if paperback fiction then serif such as Georgia or Times and if web pages and Apps then sans such as Arial or Verdana, or the Google/Android versions.

According to what I've read online is that a sans-serif font with letters not too close (or no kerning). Some may need the font size larger. Even Comic Sans can work.

Quoth · 10-14-2024, 03:50 PM

Tight kerning gives keming.

DNSB · 10-14-2024, 08:05 PM

Keming from David Friedman's Ironic Sans website.

ghastmxn · 10-16-2024, 09:48 PM

Quote:

Originally Posted by Quoth

Elephant in room: Open Dyslexic is an Arts Project. No evidence it helps anyone (Dyslexic of ADHD), but there is evidence it is harder to read than simply increasing size.

Otherwise, there is no problem embedding a font as Karellen & DNSB write.

However some Android apps have no "publisher" font option. Conversion to azw3 will work, but four models of Kindle, (K1, K2, DX and DXG) can't be upgraded to azw3 and old mobi neither supports user added fonts or embedded fonts.

If the device has the font (either supplied or added by user in designated location), then the CSS is similar but the font doesn't need embedded.

There are periodical arguments about serif vs sans and it turns out it may be what ever you are used to works best. So if paperback fiction then serif such as Georgia or Times and if web pages and Apps then sans such as Arial or Verdana, or the Google/Android versions.

Huh! Maybe it was the placebo effect all along.

DNSB · 10-17-2024, 01:05 AM

Quote:

Originally Posted by ghastmxn

Huh! Maybe it was the placebo effect all along.

At one time as part of my IT career, I worked with one school district's special needs people on several projects. One of them was testing multiple fonts to see if they had any effect on dyslexic readers. Basically, OpenDyslexic and Dyslexie did not show any consistent improvements compared to any other fonts and some subjects actually did consistently worse with them. What we did find was sans-serif fonts such as Arial and Comic Sans with a slightly larger font size worked best for the majority of the subjects but some subjects were happier with serif fonts. Basically, find a font you are comfortable with and use it.

See this article from Edutopia: Do Dyslexia Fonts Actually Work?.

Please forgive me for mentioning Comic Sans.

Quoth · 10-17-2024, 07:07 AM

Quote:

Originally Posted by ghastmxn

Huh! Maybe it was the placebo effect all along.

Most likely.
Try larger, try better line spacing and a font without too tight kerning (avoid keming).

Drop caps and SMALL CAPS lead-in can be removed/fixed, sometimes just by CSS edit. Or Diap's Span-Div tool (which can be customised) in Calibre Editor.

10-13-2024, 04:26 PM	#1
ghastmxn Junior Member Posts: 3 Karma: 10 Join Date: Oct 2024 Device: PC/iPhone SE 2	Importing Custom Font (From Local File) I'm trying to change my e-book's font to OpenDyslexic, a font I found online. https://opendyslexic.org/ I can't figure out how to get it to work. I'm trying to edit an .epub file. I imported the font through Preferences>Common options>Embed Font Family @font-face { font-family: "OpenDyslexic"; src: url(fonts/OpenDyslexic-Regular.otf); } I added the @font-face thingy in a couple of different ways. I'm getting the error "Unexpected missing generic font family" I tried messing with the content.opf, but I have no idea what I'm doing. None of the book appears in the font that I want on the E-book viewer on PC. I just want my flipping font. This is my first time using Calibre. I don't even know CSS very well or HTML (a little knowledge, but very small). It would be even more helpful if someone told me how to include rules so I don't have to do this for every book. Side note: I don't have dyslexia. I have ADHD. In middle school, I found that using this font helped me focus more on reader which motivated to read more. I did download the font.

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10-14-2024, 06:24 AM	#4
Quoth Still reading Posts: 13,606 Karma: 103503445 Join Date: Jun 2017 Location: Ireland Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper	Elephant in room: Open Dyslexic is an Arts Project. No evidence it helps anyone (Dyslexic of ADHD), but there is evidence it is harder to read than simply increasing size. Otherwise, there is no problem embedding a font as Karellen & DNSB write. However some Android apps have no "publisher" font option. Conversion to azw3 will work, but four models of Kindle, (K1, K2, DX and DXG) can't be upgraded to azw3 and old mobi neither supports user added fonts or embedded fonts. If the device has the font (either supplied or added by user in designated location), then the CSS is similar but the font doesn't need embedded. There are periodical arguments about serif vs sans and it turns out it may be what ever you are used to works best. So if paperback fiction then serif such as Georgia or Times and if web pages and Apps then sans such as Arial or Verdana, or the Google/Android versions.

10-14-2024, 03:50 PM	#6
Quoth Still reading Posts: 13,606 Karma: 103503445 Join Date: Jun 2017 Location: Ireland Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper	Tight kerning gives keming.

10-14-2024, 08:05 PM	#7
DNSB Bibliophagist Posts: 44,284 Karma: 165617033 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos	Keming from David Friedman's Ironic Sans website.