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From: "R.Wieser" <address@is.invalid>
Newsgroups: comp.mobile.android
Subject: Re: ebook reader - image scaling ?
Date: Fri, 31 May 2024 10:07:55 +0200
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Newyana2,

>>> (it also works with quotes: "50%")
>>
>> Make that "it *only* works with".
>>
> Officially attributes are supposed to be in quotes if non-numeric.
> Some people even put numbers in quotes. It works either way.
> I just tested it on IE and FF.

Yes, it does work on FF.

But you overlooked one thing : my question was about *epub*, not a 
webbrowser.  Any information about how it does work on something else is 
currently of little, if any, value to me.

>    Interesting. I've never dealt with an ebook reader.
> I guess it's not the same as basic HTML, even though
> it claims to be.

"basic HTML" ?   Never heard of that.

FYI, the html variant used in epub's is called XHTML (as I found yesterday). 
Its a bit more strict than the HTML implemented in webbrowsers. Including 
that *all* arguments to attributes need to be in double-quotes, regardless 
of if they are values or not.

I found that out when I tried to make an image appear bigger using 
"width=100%" (no double-quotes around the "100%") causing he rest of the 
page to disappear. :-|


As for the "its different" part ?  There are two parts to that.  One of them 
being that tried HTML in an app which expected XHTML, and the second part 
being that I have no idea if the epub-reader app I installed displays the 
ful range of allowed XHTML tags or just subset of them.  For instance, I 
can't get a "<hr/>" to display.

If you come across information which describes which XHTML tags an EPUB 
should display (and perhaps how) than to tell, as I could not find anything 
of the kind.

Regards,
Rudy Wieser