Conversion to Epub destroys font-size keywords:

rashkae · 01-03-2013, 09:19 PM

I've noticed that in current versions of calibre, when I convert to Epub (from Epub or from Mobi), with font size scaling disabled, Calibre converts all font fixed size keywords (font size: medium, font-size: normal, font-size: small) etc into a fixed value in pt. This is very undesireable behaviour, and forces me to apply complete font-size scalling on all convreted books so I at least get sane values in em. Is there any way to prevent this?

kovidgoyal · 01-03-2013, 10:31 PM

Open a bug report, and I will look into it, though it may not be possible to change that behavior.

JSWolf · 01-03-2013, 10:51 PM

Quote:

Originally Posted by rashkae

I've noticed that in current versions of calibre, when I convert to Epub (from Epub or from Mobi), with font size scaling disabled, Calibre converts all font fixed size keywords (font size: medium, font-size: normal, font-size: small) etc into a fixed value in pt. This is very undesireable behaviour, and forces me to apply complete font-size scalling on all convreted books so I at least get sane values in em. Is there any way to prevent this?

We (well a number of us) keep saying on MR that doing an ePub > ePub conversion is a very bad idea. What is it you need done that the conversion is doing for you? There is the Modify ePub plugin that changes/fixes a number of things in an ePub without doing any sort of conversion. I use it all the time as it works very well.

rashkae · 01-03-2013, 11:03 PM

Quote:

Originally Posted by kovidgoyal

Open a bug report, and I will look into it, though it may not be possible to change that behavior.

I will do so.... though I know 8.9 did not do this. (That was the version I was using before updating to 9.5 then 9.12)

rashkae · 01-06-2013, 08:01 PM

You may have noticed I never did file the promised bug report. After doing a bit more research to determine the proper behaviour of the font-size keywords (or more specifically in this case, the complete lack of any standardized deffinition) and doing a little experimentation with the Font Size Key, I find that using the Key to get a good result is by far the superior way to go.

kovidgoyal · 01-07-2013, 01:21 AM

Indeed, mapping the "standard" font size names to actual sizes in a manner that takes into account the screen characteristics of the target device was one of the motivations of the font size key in the first place. That is why many output profiles in calibre define their own font size key.

01-03-2013, 09:19 PM	#1
rashkae Wizard Posts: 1,268 Karma: 5935030 Join Date: Jun 2011 Location: Ontario, Canada Device: Kobo Aura HD	Conversion to Epub destroys font-size keywords: I've noticed that in current versions of calibre, when I convert to Epub (from Epub or from Mobi), with font size scaling disabled, Calibre converts all font fixed size keywords (font size: medium, font-size: normal, font-size: small) etc into a fixed value in pt. This is very undesireable behaviour, and forces me to apply complete font-size scalling on all convreted books so I at least get sane values in em. Is there any way to prevent this?

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01-03-2013, 10:31 PM	#2
kovidgoyal creator of calibre Posts: 45,187 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Open a bug report, and I will look into it, though it may not be possible to change that behavior.

01-06-2013, 08:01 PM	#5
rashkae Wizard Posts: 1,268 Karma: 5935030 Join Date: Jun 2011 Location: Ontario, Canada Device: Kobo Aura HD	You may have noticed I never did file the promised bug report. After doing a bit more research to determine the proper behaviour of the font-size keywords (or more specifically in this case, the complete lack of any standardized deffinition) and doing a little experimentation with the Font Size Key, I find that using the Key to get a good result is by far the superior way to go.

01-07-2013, 01:21 AM	#6
kovidgoyal creator of calibre Posts: 45,187 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Indeed, mapping the "standard" font size names to actual sizes in a manner that takes into account the screen characteristics of the target device was one of the motivations of the font size key in the first place. That is why many output profiles in calibre define their own font size key.

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