It's intensive, but not prohibitively so. I've used a few setups where  
large image files were uploaded and, depending on the options, two or  
even three different versions of the image are created in the save()  
method. The server has yet to explode. Try poking through some of  
these snippets and see if anything appeals to you:

http://www.djangosnippets.org/tags/thumbnail/

Eric


On Jul 11, 2008, at 3:53 AM, TheBoff wrote:

>
> To jump straight in to the question:
>
> I'm wrinting a website using the automatic admin interface, and am
> wondering if there's any way to create a thumbnail automatically upon
> the upload of the image.
>
> I know I could set it as a property, and use PIL to do it on the fly
> (well I assume I could, I haven't checked it in any detail!), but
> wouldn't that be hugely processor intensive?
>
> >


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