Epub looks different in preview, differently in Pocketbook

[VerSoc38]

I make my own OCR ebooks. So far, I've used Kindle and converted it to the AZW3 format.

Now I have a Pocketbook Touch HD3, convert to epub and everything looks exactly like I want in the preview in Calibre. But on the pocketbook nothing works, I can't change the fonts and the intervals between subtitles disappear.

Why is this happening, how to fix it?

[lumpynose]

What do you mean by "can't change the fonts"? In the e-reader's settings or in your css?

[DNSB]

Originally Posted by VerSoc38

I make my own OCR ebooks. So far, I've used Kindle and converted it to the AZW3 format.

Now I have a Pocketbook Touch HD3, convert to epub and everything looks exactly like I want in the preview in Calibre. But on the pocketbook nothing works, I can't change the fonts and the intervals between subtitles disappear.

Why is this happening, how to fix it?

The renderer used by your Pocketbook to display the epub is not the same as the one used by calibre.

Have you run your generated epubs through epubcheck?

You are probably going to have to edit the stylesheet(s) in your epub files to correct this issue. I would start by looking at the styles used to display your subtitles and any font family declarations.

One nasty possibility is that if the Pocketbook is using an Adobe RMSDK renderer, an error in the stylesheet will result in the remainder of the stylesheet being discarded.