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Old 05-11-2019, 01:29 PM   #1
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font size changing when converting
When I use calibre's epub to azw3 conversion on the downloaded epub for this book:

https://www.gutenberg.org/ebooks/42664

it uses things like "font-size: 1.29167em;" in the CSS. Whereas for this book

https://www.gutenberg.org/ebooks/42259

it uses the usual "font-size: 1em;".

In the conversion settings under Look & Feel I have Disable font size rescaling unchecked.

What is in the first book that's making it use the "weird" font size?
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Old 05-11-2019, 01:46 PM   #2
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one clue is that as a fraction, 1.29167 is 93/72.
72 is a popular point size. less sure about 93 though
you may also sometimes see 1.11111 which is 80/72
and 0.909091 which a scale down of 1.1 to 1

change it to 1.3 if you want extreme neatness in your CSS
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Old 05-11-2019, 02:02 PM   #3
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But I'm trying to figure out what's triggering this difference. Both of the EPUB css files look unremarkable to me. If I had a unix system I'd use diff on their respective css files.
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Old 05-11-2019, 02:27 PM   #4
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Is it having to convert font words like large, small....or are there differnces between main body font size and paragraph ones.?
I see many strange decimals if a main calibre body font is 1.1 Or 1.2 em, not 1 em.
You can post entire CSS inside code tags for other eagle eyes here. If desperate
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Old 05-11-2019, 02:48 PM   #5
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Is it having to convert font words like large, small....or are there differnces between main body font size and paragraph ones.?
I see many strange decimals if a main calibre body font is 1.1 Or 1.2 em, not 1 em.
You can post entire CSS inside code tags for other eagle eyes here. If desperate
When I get back this afternoon I'm going to try swapping the css files; use the ones that work with the book that gets the weird font sizes and see if that fixes it.
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Old 05-11-2019, 02:50 PM   #6
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Check also for any inline styles within the html.
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Old 05-11-2019, 07:03 PM   #7
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Originally Posted by lumpynose View Post
If I had a unix system I'd use diff on their respective css files.
Try this ==>> comp | Microsoft Docs

Or use something like Beyond Compare.

BR
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Old 05-11-2019, 07:39 PM   #8
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Quote:
Originally Posted by lumpynose View Post
If I had a unix system I'd use diff on their respective css files.
Quote:
Originally Posted by BetterRed View Post
Try this ==>> comp | Microsoft Docs

Or use something like Beyond Compare.
If it's any help, on Windows I use KDiff3, which is free and open source.
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Old 05-11-2019, 09:22 PM   #9
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Isn't there a "windows subsystem for linux" that has diff?
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Old 05-11-2019, 10:18 PM   #10
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Isn't there a "windows subsystem for linux" that has diff?
I'm not going to pollute my windows system with linux.

I'm being sarcastic because before I retired one of my jobs was a Solaris and Linux system administrator. I'm a big fan of linux for servers but I think it's a bit silly to use it on a desktop. If I really wanted to play with Linux I do have a Raspberry Pi I could dust off and reinstall it on.
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Old 05-11-2019, 10:20 PM   #11
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Check also for any inline styles within the html.
Nope. The html files are quite simple. I tried my experiment with replacing the contents of the css files in Gods of the North with the ones from The People of the Black Circle. No cigar, same problem.
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Old 05-11-2019, 11:56 PM   #12
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Isn't there a "windows subsystem for linux" that has diff?
Yep - Microsoft's Windows Subsystem for Linux; version 1 is rather awkward to enable, but version 2 should be easier, it's a full blown kernel, should be in the next Windows. You might have to install one of the Linux Apps (Ubuntu, Debian, Arch etc) to get diff.

BR
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Old 05-12-2019, 12:55 AM   #13
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Nope. The html files are quite simple. I tried my experiment with replacing the contents of the css files in Gods of the North with the ones from The People of the Black Circle. No cigar, same problem.
unfortunately your throwaway remark about linux has everyone excited and off topic
i think you'll need to post the CSS of the 2 books, if there are definitely no in line styles elsewhere
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Old 05-12-2019, 01:16 PM   #14
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Quote:
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unfortunately your throwaway remark about linux has everyone excited and off topic
i think you'll need to post the CSS of the 2 books, if there are definitely no in line styles elsewhere
Sadly, the 3 CSS stylesheets in the two epubs are identical using the mark 1 eyeball and Sha-256 checksums. The same 3 stylesheets are used in quite a few Gutenberg ebooks so corporate boilerplate. The only style inside the text files is for the cover page.

The only non-numeric font size was used for the first sentence in Gods of the North which used a "smaller" font size.
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Old 05-12-2019, 01:21 PM   #15
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Quote:
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Sadly, the 3 CSS stylesheets in the two epubs are identical using the mark 1 eyeball and Sha-256 checksums. The same 3 stylesheets are used in quite a few Gutenberg ebooks so corporate boilerplate. The only style inside the text files is for the cover page.

The only non-numeric font size was used for the first sentence in Gods of the North which used a "smaller" font size.
ok, so try the obvious thing : remove that " smaller" style setting
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