[whatwg] Features for responsive Web design

[Henri Sivonen]

On Thu, Sep 6, 2012 at 3:45 AM, David Singer <singer at apple.com> wrote:
>
> On Sep 4, 2012, at 12:47 , Ian Hickson <ian at hixie.ch> wrote:
>
>> On Thu, 7 Jun 2012, Mark Callow wrote:
>>>
>>> IIRC Kodak's PhotoCD image format had this characteristic. The first
>>> part is a low res. image, the second is the differences between the low
>>> res. image zoomed to the high res. size and the actual high res. image.
>>
>> Such formats certainly would make a lot of this simpler!
>
> supported in JPEG 2000 (for files in resolution progression order), FWIW

What software can be used to create such images for testing? (Last I
tried this with JPEG 2000 creation software, decoding a quarter-sized
image required the first *half* of the file.)

-- 
Henri Sivonen
hsivonen at iki.fi
http://hsivonen.iki.fi/