font embedding / license

[vermillion6]

Hello,
I want to publish an epub using a google open font (Noto mono). I’m using the font in Word, then create the epub w/ the Calibre software. In case I want to embed the font, according to the OFL: "the license txt file should be included in the epub file" but I don’t know how to do that.

I was told by a member of the OFL forums the following:
"The key question is whether the fonts are changed at all by Calibre. If they are just copied in, then the license info remains in the font itself and you’re OK. If they change the fonts then you’ll need to confirm that the copyright and license info in the fonts remain there. You’ll need to write the Calibre developers to confirm what they are doing."

So my question is: Are the fonts changed in any way when they are embedded? Do I need to be doing anything else so that the license text file be included w/ the embedded font? or Is it that when I choose the font to be embedded in Calibre, the license is included automatically somehow?

When I did some tests and unzipped epub files w/ embedded fonts to see the contents, I couldn't find anything that resembled a license text file.

Also, should the font be embedded by selecting the ttf or otf font file or through a zip file that includes the font as well as the license txt file.

Please help, I'm totally lost
Thank you very much in advance

[JSWolf]

Calibre does not change the font unless you tell it to such as subsetting.

[kovidgoyal]

EPUB does not have any mechanism for embedding txt files. Simply add the license text as text at the end of your book. And really fonts have the capability for storing license text within the font file, which is what the creators of the font should be doing rather than asking people to sprinkle text files everywhere.

[vermillion6]

Thank you very much for the feedback

[vermillion6]

Hello,

I've been trying to read an epub I created w/ Calibre that has an embedded font (Noto mono - an open monospaced font from Google) in an iPad device but it won't see the embedded font. It only displays fonts installed originally in the device, e.g.
Athelas, Charter, Georgia, Iowan, Palatino, San Francisco, New York, Seravek, Times New Roman

Is there sth else I can do with the epub while I create it w/ Calibre so that iBooks (or/and possibly other devices) can read the embedded font?

((( This is the procedure I follow so far. It seems to work w/ various reader apps for android like kobo, pocketbook or pc readers like Adobe Digital Editions.
I drag the Word docx file (the book) inside Calibre
I press Convert Books
In the Look & Feel tab -> Embed Font Family -> I choose the font I want to embed
then press ok
then save the book
then load the epub in iPad through mail )))

Also, on a similar note, the kindle app for android does see the embedded font, but only if first the epub is loaded to the draft2digital platform (it's the publisher I'll use) and then export it from there. Even though the epub file seems identical w/ the previous one, only after the export from d2d the embedded font is readable by kindle (it shows an extra option in the fonts: Publisher font).

I've been told that using embedded fonts in epub is a hassle and that it may result in some distributors stripping the embedded font from the epub completely. I can't imagine what will happen then. Will some other monospace font be loaded into place? Or just some other random font that'll mess up the book form completely?
It's very important for me to have the book displayed in a monospaced font (any monospaced really) as it has a specific form that must be kept (like code but not exactly). The only reason I decided to use the embedded method is to have the epub presented in the way that I want w/ some major distributors like kindle, kobo, iBooks, Barnes & Noble. So far only the kobo app works ok (with or w/out embedded), kindle works only if I embed and then upload to d2d and then export from there and then load to kindle app, Barnes and Noble is a mystery (not available in my country), and iBooks just doesn't see the embedded font.

I'm not a professional programmer, so all this seems confusing to say the least.
Any ideas on how to get the epub to display properly to these major distributors? In your professional opinion is it better to embed or not? (so as to get any device to display it in a monospaced font)

So sorry for the long post

p.s. this is part of the code in the stylesheet file that calibre creates:

.block_25 {
color: black;
display: block;
font-family: serif;
font-size: 1em;
line-height: 1.15;
text-align: justify;
padding: 0;
margin: 0
}
.calibre {
color: #365F91;
display: block;
font-family: "Noto Mono", monospace;
font-size: 0.625em;
padding-left: 0;
padding-right: 0;
margin: 0 5pt
}