[OLPC library] [support-gang] Image sizes on the wiki was: working hard @ Boston's

Christoph Derndorfer e0425826 at student.tuwien.ac.at
Sat Apr 21 08:51:38 EDT 2012

On Wed, Apr 11, 2012 at 3:42 PM, Frederick Grose <fgrose at gmail.com> wrote:

> On Sun, Apr 8, 2012 at 1:38 PM, Christoph Derndorfer <
> e0425826 at student.tuwien.ac.at> wrote:
>> On Sat, Apr 7, 2012 at 8:31 PM, S Page <skierpage at gmail.com> wrote:
>>> On Fri, Apr 6, 2012 at 16:07, Christoph Derndorfer
>>> <e0425826 at student.tuwien.ac.at> wrote:
>>> > If jumping over these extra hurdles bring a lot of value and can be
>>> described
>>> > in simple terms then I'm all for it
>>> Good point.  I see you're writing "MISSING IMAGE", that's fine too.
>>> My alternative lets a writer show a placeholder image, see
>>> http://wiki.laptop.org/go/User:Skierpage#Placeholder_images . Either
>>> way makes it easy to find missing images.
>>> I documented both under
>>> http://wiki.laptop.org/go/Help_Activity_refresh#Images
>>> I notice the instructions say 800px wide screenshots. I think it's
>>> faster/better to leave them at 1200 wide and tell the HTML or markup
>>> to display them smaller.
>> Hi there,
>> thanks a lot for adding the instructions to
>> http://wiki.laptop.org/go/Help_Activity_refresh#Images, much appreciated.
>> As for the width of the screenshots we chose the 800px wide because that
>> works well for consumption on the XOs (as it leaves plenty of space for a
>> menu, etc.).
> When a 1200x900 pixel image is uploaded to the wiki and then displayed at
> an alternate size, such as with the [[File:Screenshot wanted.png|800px|*
> ActivityName* screenshot]] wiki code, then the wiki resizes and saves a
> .png copy of the image at 800 pixel width in an /images/thumb/ branch
> folder.
> See, for example, all the sizes saved here:
> http://wiki.sugarlabs.org/images/thumb/9/95/Journal_tag_mockup_frm_gary_v1.png/
> (Direct navigation to the thumb branches on wiki.laptop.org has been
> blocked.  One only sees the message, "Down for upgrades. Come back
> tomorrow!")
> The 120px and 320px images are saved for the thumbnail and preview on the
> File page.  The others are generated when a new cropping width is requested
> by some wiki code.  This allows the wiki server to cache the images for
> better performance.  This also means that the XO laptop, or any browser
> does not need to process the original image size.

Hi Fred,

sorry for the slow reply.

Re-reading your message now I'm not sure what exactly you're suggesting
here. It sounds to me like getting the thumbails out of the wiki afterwards
is a bigger hassle than taking the 15 seconds it takes to resize the
original image and upload that one. Or am I missing something here?


>        --Fred
> I see little value in keeping the 1200px wide version (with the exception
>> of reducing one step in the image work) as we can't count on having the
>> manpower to do extensive post-processing, resizing of all images, funky
>> exporting, etc. once everyone leaves here in just over 48 hours...
>> Christoph
>> --
>> Christoph Derndorfer
>> volunteer, OLPC (Austria) [www.olpc.at]
>> editor, OLPC News [www.olpcnews.com]
>> contributor, TechnikBasteln [www.technikbasteln.net]
>> e-mail: christoph at derndorfer.eu
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> support-gang at lists.laptop.org
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Christoph Derndorfer

volunteer, OLPC (Austria) [www.olpc.at]
editor, OLPC News [www.olpcnews.com]
contributor, TechnikBasteln [www.technikbasteln.net]

e-mail: christoph at derndorfer.eu
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