Kobo n647 css problem

[robertosaenz]

Hello everyone. A few months ago I commented on the forum that I am working on an epub3 on calibre using several mathematical symbols. I've been using a lot of html5 and uft8 math symbols, plus very basic css settings, no flexbox or grid, just regular boxes.

Yesterday I received a kobo n647 which I bought on purpose to test my epub on older devices. The truth is that the stylesheet doesn't work at all, also, many uft8 and html5 symbols don't even show. Am I doing something wrong? I just threw my epub on the kobo by connecting it by cable. I don't have much experience with these devices so I am asking for advice from those who have more experience with these.

[Quoth]

Most epub3 and maths won't work on any eink ereader. You need epub3 compliant apps on iOS and Android. The Kobos do support some epub3, maybe more if it's a kepub file. I don't know if the N647 even does kepub, it's so prehistoric too old for here:
https://pgaskin.net/KoboStuff/kobofirmware.html
Earliest is the Kobo Touch N905 (3 versions).
The Kobo N647 is also called Kobo Wireless, released 15 October 2010. The Kobo Touch (N905) was a year later (2011) and about the oldest Kobo you want to even think about.
https://help.kobo.com/hc/en-us/artic...or-Kobo-tablet
https://en.wikipedia.org/wiki/Kobo_eReader

and
https://wiki.mobileread.com/wiki/Kobo (This site)




Of course nearly anything will work on a suitable Linux, Mac or Windows desktop/laptop viewer.

Did you embed the fonts and select Publisher font on the Kobo? But maybe the Kobo Wireless N647 / N47 doesn't have that.

[JSWolf]

Originally Posted by Quoth

Most epub3 and maths won't work on any eink ereader. You need epub3 compliant apps on iOS and Android. The Kobos do support some epub3, maybe more if it's a kepub file. I don't know if the N647 even does kepub, it's so prehistoric too old for here:
https://pgaskin.net/KoboStuff/kobofirmware.html
Earliest is the Kobo Touch N905 (3 versions).
The Kobo N647 is also called Kobo Wireless, released 15 October 2010. The Kobo Touch (N905) was a year later (2011) and about the oldest Kobo you want to even think about.
https://help.kobo.com/hc/en-us/artic...or-Kobo-tablet
https://en.wikipedia.org/wiki/Kobo_eReader

and
https://wiki.mobileread.com/wiki/Kobo (This site)




Of course nearly anything will work on a suitable Linux, Mac or Windows desktop/laptop viewer.

Did you embed the fonts and select Publisher font on the Kobo? But maybe the Kobo Wireless N647 / N47 doesn't have that.

The N647 is a Kobo Wireless. It's not a Touch. So it's well and truly obsolete.

[JSWolf]

Originally Posted by robertosaenz

Hello everyone. A few months ago I commented on the forum that I am working on an epub3 on calibre using several mathematical symbols. I've been using a lot of html5 and uft8 math symbols, plus very basic css settings, no flexbox or grid, just regular boxes.

Yesterday I received a kobo n647 which I bought on purpose to test my epub on older devices. The truth is that the stylesheet doesn't work at all, also, many uft8 and html5 symbols don't even show. Am I doing something wrong? I just threw my epub on the kobo by connecting it by cable. I don't have much experience with these devices so I am asking for advice from those who have more experience with these.

Given that the Kobo N647 is a really old and obsolete device, I suggest you return it if you can and get a current device. You can then send your ePub 3 to the Kobo as KePub and see how well it works. But for now, the N647 imay not be useful for what you want.

[Quoth]

Originally Posted by JSWolf

The N647 is a Kobo Wireless. It's not a Touch. So it's well and truly obsolete.

I said it's not and that the Touch is the oldest to consider, and even it's not great, but would do to test.

Do actually read other people's posts!

[robertosaenz]

Well, I tried to convert the epub to kepub with Kepubify but it didn't work eather, the device doesn't even open the kepub. I'll try with the kobo app and see what happens.

[JSWolf]

delete post

[JSWolf]

Originally Posted by robertosaenz

Well, I tried to convert the epub to kepub with Kepubify but it didn't work eather, the device doesn't even open the kepub. I'll try with the kobo app and see what happens.

The app is not the same as actually using a Kobo Reader. It's time you buy a more recent Kobo that will work to test your ePub.

[DNSB]

Originally Posted by robertosaenz

Well, I tried to convert the epub to kepub with Kepubify but it didn't work eather, the device doesn't even open the kepub. I'll try with the kobo app and see what happens.

The N647 is too old to have dual renderers used by newer Kobos where the RMSDK renderer used for .epub files and the Webkit based renderer used for .kepub.epub files. And yes, the double extension is needed to have the ebooks recognized as kepubs on the newer Kobos. The Webkit based renderer is needed for epub3 files which is what you are trying to generate.

That is, filename.epub is an epub file and filename.kepub.epub is a kepub. Using filename.kepub will not work on your Kobo though it can be used in calibre which will automagically add the .epub when sending to your Kobo.