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Old 05-09-2013, 05:45 PM   #68
Man Eating Duck
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Posts: 254
Karma: 69786
Join Date: May 2006
Location: Oslo, Norway
Device: Kobo Aura, Sony PRS-650
Quote:
Originally Posted by Zetetic View Post
I believe that 1.2em (-ish) is certainly the default for many desktop renderers.
Yes, I've heard 1.25em or 125%. Still, I checked computed values for Firefox and Chrome via developer tools. All values are for font-size:normal.

Code:
Firefox line-height:
normal: 20px
1em:    16px
1.2em:  19.2px
1.25em: 20px
100%:   16px
120%:   19.2px
125%:   20px

Chrome line-height:
normal: 20px
1em:    16px
1.2em:  19.1875px
1.25em: 20px
100%:   16px
120%:   19px
125%:   20px

ADE line-height (measured with screen ruler, 10 lines/10):
normal: 19px
1em:    16px
1.2em:  19.1px
1.25em: 20px
100%:   15.9px
120%:   19.2px
125%:   20px
Curiously, ADE has a slightly smaller normal value (118.75%). The next time I upload a batch of books to my prs-650 I'll measure the test-epub with a ruler, I believe it is similar. I find the normal line-height with the default font to be very pleasant on my device. Like the majority of those who have spoken up about it, 1em seems too small for me.

Edit: The font rendered was the default fonts, this could explain the different values in ADE. Firefox and Chrome both used Times New Roman. If I can find the time tomorrow I'll update my test epub to reflect this and see if the value changes. I could also embed a few different fonts for comparison of "normal" line height rendering, suggestions are welcome.

Last edited by Man Eating Duck; 05-09-2013 at 06:06 PM.
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