Is there a way to force browsers to refresh/download images?

Question

I have a problem where users are reporting that their images aren\'t being uploaded and the old ones are still there. On closer inspection the new images are there, they jus

Answer 1

you can control the cache behaviour by playing with the HTTP headers.

setting the expires header in past would force browser to not use cached version.

Expires: Sat, 26 Jul 1997 05:00:00 GMT

You can consult the RFC to have more details.