How can I disable calibre splitting after converting a book?

1ily · 06-04-2025, 01:28 AM

Hello!

I convert all my ebooks in calibre to epub, and I've been running into an issue where it will split chapters into two. Usually this happens when there is a chapter number and a chapter title.

All .xhtml files are below 30kb - way under the split by size limit.

The code looks like this:

Code:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops" xml:lang="en" lang="en">
<head>
  <meta charset="UTF-8" />
  <title>Sebastián</title>
  <link rel="stylesheet" type="text/css" href="style.css" />
</head>
<body>
  
  <div class="th-767a2bf9-abd9-4801-bc80-086037f91207"><div class="chapter"><div class="chapter-title-card "><div class="chapter-number"><span>1</span></div><div class="chapter-title"><h2>Sample Title</h2></div></div><div class="chapter-body withDropcap"><div class="wrapper"><p><span aria-hidden="true" class="dropcap">L</span><span aria-hidden="true" class="lead_word">orem</span> <span aria-hidden="true" class="lead_word">ipsum</span> <span aria-hidden="true" class="lead_word">dolor</span> <span aria-hidden="true" class="lead_word">sit</span> amet. </p>

How can I disable chapter splitting?

enuddleyarbl · 06-04-2025, 10:48 AM

In the Convert settings, at Structure Detection, there's some stuff about detecting chapters (on mine, it looks like it adds a pagebreak when it finds one). I don't know anything about how that works. But, maybe it's a pointer in the right direction. Sorry.

kovidgoyal · 06-04-2025, 10:53 AM

All splitting other than size based splitting is controlled by the options under the structure detection part of the conversion dialog.

theducks · 06-04-2025, 11:04 AM

see that div class="chapter"

That happens to be a DEFAULT keyword in the split options.
Adjust one or the other
Another common one that trips extra splits is
h2 (chapter number) followed by h3 (chapter title)

There are still folk that STYLE by using these tags. I just change that h3 (pair) to a p pair

1ily · 06-04-2025, 07:16 PM

Thank you for all the advice

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06-04-2025, 10:48 AM	#2
enuddleyarbl Guru Posts: 771 Karma: 1537886 Join Date: Sep 2013 Device: Kobo Forma	In the Convert settings, at Structure Detection, there's some stuff about detecting chapters (on mine, it looks like it adds a pagebreak when it finds one). I don't know anything about how that works. But, maybe it's a pointer in the right direction. Sorry.

06-04-2025, 10:53 AM	#3
kovidgoyal creator of calibre Posts: 45,251 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	All splitting other than size based splitting is controlled by the options under the structure detection part of the conversion dialog.

06-04-2025, 11:04 AM	#4
theducks Well trained by Cats Posts: 30,939 Karma: 60358908 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	see that div class="chapter" That happens to be a DEFAULT keyword in the split options. Adjust one or the other Another common one that trips extra splits is h2 (chapter number) followed by h3 (chapter title) There are still folk that STYLE by using these tags. I just change that h3 (pair) to a p pair

06-04-2025, 07:16 PM	#5
1ily Connoisseur Posts: 63 Karma: 190 Join Date: Sep 2023 Device: Kobo Libra 2	Thank you for all the advice