Resizing images without pixelation

Hi everyone
This is a topic that everyone seems to be wondering about but
nobody has the answer. If you look at a site like
www.manipulator.com , the screen can be resized and the images will
increase along with it (until a certain point of course) but at no
point do the images pixelate? Where as my images do not matter how
good the quality or picture format.
If anybody has any ideas how this is done I would be
greatful!
Thanks
SG

First question - why do you need the JPEGs? If it's to upload them to a site via FTP there are export plug-ins to do this directly from within Aperture.
Using the media browser isn't going to help you at all because that will be accessing Previews in Adobe98 profile - not something you should be putting up on a website.
I also came across this problem when I wanted to convert a large number of raw files to jpegs and keep the new jpegs in my library. At the time I was running low on disk space and didn't need the raws anymore, but had to go through the process of exporting and re-importing for a bunch of projects.
Sorry, but that's a bit too alien an idea for me - I never threw away negatives back when I was using film, why would you throw away RAW files now?
Another pet peeve I have is that there is no status indicator when exporting (2 minutes left, 25% done, etc....anything besides a beachball), so I don't know how long the export will take, and on my 2006 macbook it sometimes takes a while.
At the bottom of the Browser pane on the left you will see a progress 'swirl' when exporting, importing or generating Previews. Click on it to bring up the activity window with progress bars for all current actions. You can also access it through Window>Show Activity.
Ian

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