Nothing to do with Perl, but if JavaScript is allowed, and the number and names of the files were predictable, it might be possible, right?

I mean, if you knew that the files were always called "1.jpg" through to "30.jpg" then you could script the form values and the form submissions?

It's still a bad idea, I'm just thinking aloud.
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“Every bit of code is either naturally related to the problem at hand, or else it's an accidental side effect of the fact that you happened to solve the problem using a digital computer.”
M-J D