W3C home > Mailing lists > Public > public-epub3@w3.org > May 2019

Re: Transparency in images

From: Lora Friedenthal <lora@scribd.com>
Date: Fri, 10 May 2019 10:36:55 -0400
Message-ID: <CAP9mR7Mek-ePr4hfbNB1vjmxaw7xPri1Nrd3b-eL1Ge1W2DF3g@mail.gmail.com>
To: Charles LaPierre <charlesl@benetech.org>
Cc: "public-epub3@w3.org" <public-epub3@w3.org>
Charles,

That's actually the challenge I wanted to present the designer. Make an
ornament that would function on all backgrounds. Function wouldn't have to
mean look the same, but it would mean "is a visible section break," and so
at least would require both white and black elements. But that only makes
sense as a thing to play around with if transparency works.



[image: photo]
Lora Friedenthal
Pronoun(s): She/Her/Hers
Content Operations Specialist at Scribd
<http://www.facebook.com/scribd>
<http://www.linkedin.com/company-beta/129665/> <http://twitter.com/scribd>


On Fri, May 10, 2019 at 10:25 AM Charles LaPierre <charlesl@benetech.org>
wrote:

> There is also the accessibility concern that if you use a transparent
> image which may look great on a white background, but will it still be
> viewable when the reader switches to night mode?
>
> Thanks
> EOM
> Charles LaPierre
> Technical Lead, DIAGRAM and Born Accessible
> Twitter: @CLaPierreA11Y
> Skype: charles_lapierre
>
>
> On May 8, 2019, at 10:47 AM, Lora Friedenthal <lora@scribd.com> wrote:
>
> Hello. Can someone tell me whether transparency layers in PNG and GIF are
> supported in EPUB3? I assume since every viewer shows a white box around
> images it must not be, but I also can't find anywhere in the spec that says
> it shouldn't work. I'm trying to determine if we just have to live with
> ornaments in the text being in white boxes when users change the background
> color of the reader.
>
>
>
> [image: photo]
> Lora Friedenthal
> Pronoun(s): She/Her/Hers
> Content Operations Specialist at Scribd
> <http://www.facebook.com/scribd>
> <http://www.linkedin.com/company-beta/129665/> <http://twitter.com/scribd>
>
>
>
Received on Friday, 10 May 2019 14:36:25 UTC

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