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I made my own webpage on my desktop, with images with a remote src value. ie. the page was saved locally, but displayed images from a remote website.

I loaded the page in Google Chrome, waited for images to load, then right-clicked on an image, and chose save. The image was then downloaded a second time from the remote website.

Why didn't Chrome use the local copy it had downloaded the first time?

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Are you sure it is actually downloading the image? The browser would normally send a request to the server to check if it has modified and if it has not been modified then it can use the cached version. It may sometimes take a little time to copy the cached version to your download folder if it is a very big image. Also a server can control caching and indeed disable it. It might be worth using Chrome's developer tools to check the request headers. – James Mar 30 '11 at 14:11
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