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Old 08-19-2014, 01:10 PM   #38
DNSB
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Posts: 47,232
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Join Date: Jul 2010
Location: Vancouver
Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos
Quote:
Originally Posted by Amalthia View Post
Based off the comments I've read it sounds like if the font size is embedded in the epub file, Kobo would not adjust the font to a larger or smaller size?

If that is the case, then maybe a message should have appeared on the screen letting us know why we could not increase/decrease the font, instead of crashing the reader.

On the Sony readers we were always able to adjust the font size. Almost every ebook I've purchased has embedded font sizes in the css file. The feature to adjust the font size is nearly useless if no one can use it without having to reformat their epubs.
I would correct your first sentence to say if the font size is specified in absolute values (pixels, points, cm, etc.), they will not be adjustable As one web site warns:

Code:

Note: Defining font sizes in pixel is not accessible, because the user cannot
change the font size from the browser. (For example, users with limited
vision may wish to set the font size much larger than the size chosen by
a web designer.) Therefore, avoid using pixels for font sizes if you wish
to create an inclusive design.
However, I've seen very few ebooks using fixed font sizes -- three at my last count, two of which were from self-published authors. With relative font sizes, what font size is the starting font size can and does vary quite widely so you may need to use the slider to set the body text font to a comfortable size.

Personally, I do specify font sizes in my stock CSS but they are specified using relative terms -- em, %, so they scale on different displays which may not quite match my vision but is better for the end user.

Regards,
David

Last edited by DNSB; 08-19-2014 at 01:13 PM.
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