epub 3 and subtitles

hobnail · 09-14-2020, 06:23 PM

If I add a subtitle with Sigil by adding the metadata for Title, then add to that the property for subtitle, that subtitle needs to be after the main title in the content.opf; it it's before the main title then Calibre displays the subtitle as the book's title. Maybe it's in the epub 3 standard that order is significant for title and subtitle?

Subtitle first:

Code:

<dc:title id="tle">Subtitle</dc:title>
<meta refines="#tle" property="title-type">subtitle</meta>
<dc:title>Main title</dc:title>

Main title first:

Code:

<dc:title>Main title</dc:title> 
<dc:title id="tle">Subtitle</dc:title> 
<meta refines="#tle" property="title-type">subtitle</meta>

JSWolf · 09-14-2020, 07:28 PM

Or just do it like this which is the most common way to do it and it works.

Code:

<dc:title>Main title: subtitle</dc:title>

DNSB · 09-14-2020, 10:17 PM

Quote:

Originally Posted by hobnail

If I add a subtitle with Sigil by adding the metadata for Title, then add to that the property for subtitle, that subtitle needs to be after the main title in the content.opf; it it's before the main title then Calibre displays the subtitle as the book's title. Maybe it's in the epub 3 standard that order is significant for title and subtitle?

Subtitle first:

Code:

<dc:title id="tle">Subtitle</dc:title>
<meta refines="#tle" property="title-type">subtitle</meta>
<dc:title>Main title</dc:title>

Main title first:

Code:

<dc:title>Main title</dc:title> 
<dc:title id="tle">Subtitle</dc:title> 
<meta refines="#tle" property="title-type">subtitle</meta>

I would suspect that calibre is using the first dc:title as the title.

kovidgoyal · 09-15-2020, 03:27 AM

No calibre will only use the first title as the main title if there is no title that has the "main" title-type. So if you want to put a subtitle AND have it before the main title for some reason, be sure to add the refine to the main title saying it is the main title.

hobnail · 09-15-2020, 03:36 AM

Quote:

Originally Posted by kovidgoyal

No calibre will only use the first title as the main title if there is no title that has the "main" title-type. So if you want to put a subtitle AND have it before the main title for some reason, be sure to add the refine to the main title saying it is the main title.

Thanks, good to know. I'll add that to my template/startup epub file for sigil.

09-14-2020, 06:23 PM	#1
hobnail Running with scissors Posts: 1,592 Karma: 14328510 Join Date: Nov 2019 Device: none	epub 3 and subtitles If I add a subtitle with Sigil by adding the metadata for Title, then add to that the property for subtitle, that subtitle needs to be after the main title in the content.opf; it it's before the main title then Calibre displays the subtitle as the book's title. Maybe it's in the epub 3 standard that order is significant for title and subtitle? Subtitle first: Code: <dc:title id="tle">Subtitle</dc:title> <meta refines="#tle" property="title-type">subtitle</meta> <dc:title>Main title</dc:title> Main title first: Code: <dc:title>Main title</dc:title> <dc:title id="tle">Subtitle</dc:title> <meta refines="#tle" property="title-type">subtitle</meta>

09-14-2020, 07:28 PM	#2
JSWolf Resident Curmudgeon Posts: 80,825 Karma: 150249619 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	Or just do it like this which is the most common way to do it and it works. Code: <dc:title>Main title: subtitle</dc:title>

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09-15-2020, 03:27 AM	#4
kovidgoyal creator of calibre Posts: 45,617 Karma: 28549044 Join Date: Oct 2006 Location: Mumbai, India Device: Various	No calibre will only use the first title as the main title if there is no title that has the "main" title-type. So if you want to put a subtitle AND have it before the main title for some reason, be sure to add the refine to the main title saying it is the main title.

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