indesirable text visible in Koreader but not in Kobo

Villard · 02-19-2023, 04:19 AM

Hello
I've got a book in which there are these tags :
<span epub:type="pagebreak" id="page_3" role="doc-pagebreak" title="3"/> and so on <span epub:type="pagebreak" id="page_X" role="doc-pagebreak" title="X"/>. X is cleary the page number of the printed version of the book (see below)

In Koreader, all these numbers "X" and so on appear in the right margin. Fortunately, there is no page breaking.
In the native Kobo reader, all is fine and this text is not visible.

What surprises me is that in the tag <span epub:type="pagebreak" id="page_X" role="doc-pagebreak" title="X"/> , there is no plain text : "X" appears only in the attributes. However Koreader picks the number and shows it .

About the book : I bought it on Google Play and transferred it to my Kobo using ADE and Calibre.
Calibre e-book editor indicates errors in the css pages. However, even before correction, the rendering is good in Calibre viewer and Kobo viewer but not in the Koreader viewer.
When I edit the book and delete all the tags <span epub:type="pagebreak" id="page_X" role="doc-pagebreak" title="X"/>, the Koreader view is then OK.

So my question is why Koreader keeps this tag, extracts the page number and shows it. I can provide a short extract of the book if useful.

Thanks
Villard

NiLuJe · 02-19-2023, 01:43 PM

Sidebar: Wrong forum, I stumbled on it entirely by accident

.

Those are (one of the ways to use) an ePub 3 feature to display "reference" (i.e., pbook) page numbers.
We display those by default, but disabling that is a tap away ([Document] > Reference pages > Show reference page labels in margin).

(That menu will only be visible on documents that use this feature. Like everywhere else, a long-press will set a default so you don't get surprised in another book later).

NiLuJe · 02-19-2023, 01:45 PM

c.f., https://www.w3.org/TR/epub-33/#sec-nav-pagelist for the possibly relevant part of the ePub specs (which is, as always, a joy to navigate... (/s)).

Villard · 02-20-2023, 07:21 AM

Hello NiJuLe
Thanks a lot for this tip.
I was not aware of this tweak.
and Thanks to have discoved my pots.
I thought I've posted my first message in the good forum
Villard

02-19-2023, 04:19 AM	#1
Villard Connoisseur Posts: 74 Karma: 10 Join Date: May 2016 Device: Koreader running on Kobo Libra 2	indesirable text visible in Koreader but not in Kobo Hello I've got a book in which there are these tags : <span epub:type="pagebreak" id="page_3" role="doc-pagebreak" title="3"/> and so on <span epub:type="pagebreak" id="page_X" role="doc-pagebreak" title="X"/>. X is cleary the page number of the printed version of the book (see below) In Koreader, all these numbers "X" and so on appear in the right margin. Fortunately, there is no page breaking. In the native Kobo reader, all is fine and this text is not visible. What surprises me is that in the tag <span epub:type="pagebreak" id="page_X" role="doc-pagebreak" title="X"/> , there is no plain text : "X" appears only in the attributes. However Koreader picks the number and shows it . About the book : I bought it on Google Play and transferred it to my Kobo using ADE and Calibre. Calibre e-book editor indicates errors in the css pages. However, even before correction, the rendering is good in Calibre viewer and Kobo viewer but not in the Koreader viewer. When I edit the book and delete all the tags <span epub:type="pagebreak" id="page_X" role="doc-pagebreak" title="X"/>, the Koreader view is then OK. So my question is why Koreader keeps this tag, extracts the page number and shows it. I can provide a short extract of the book if useful. Thanks Villard Last edited by Villard; 02-19-2023 at 04:21 AM.

02-19-2023, 01:43 PM	#2
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	Sidebar: Wrong forum, I stumbled on it entirely by accident . Those are (one of the ways to use) an ePub 3 feature to display "reference" (i.e., pbook) page numbers. We display those by default, but disabling that is a tap away ([Document] > Reference pages > Show reference page labels in margin). (That menu will only be visible on documents that use this feature. Like everywhere else, a long-press will set a default so you don't get surprised in another book later). Last edited by NiLuJe; 02-19-2023 at 01:47 PM.

02-20-2023, 07:21 AM	#4
Villard Connoisseur Posts: 74 Karma: 10 Join Date: May 2016 Device: Koreader running on Kobo Libra 2	Hello NiJuLe Thanks a lot for this tip. I was not aware of this tweak. and Thanks to have discoved my pots. I thought I've posted my first message in the good forum Villard Last edited by Villard; 02-20-2023 at 07:23 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Book downloaded via OPDS only visible in KOReader?	avggeek	KOReader	6	02-15-2023 04:38 AM
Books transferred using KOreader not visible without	bob.f	KOReader	4	10-12-2022 02:53 PM
"text-decoration: line-through;" Barely Visible on Kobo Forma	enuddleyarbl	ePub	45	08-15-2022 01:54 PM
Image overlayed over text (but text visible if image disabled)?	Kaylee Skylyn	ePub	5	08-01-2012 05:27 PM
text not visible in any view	Susan Archie	Sigil	12	07-12-2012 08:36 PM

02-19-2023, 01:45 PM	#3
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	c.f., https://www.w3.org/TR/epub-33/#sec-nav-pagelist for the possibly relevant part of the ePub specs (which is, as always, a joy to navigate... (/s)).

Advert