You seem to confuse HTML entities with URI escaping.

Nope, I was just giving an example of a similarily trivial transformation that's covered by a CPAN module.

Also, a HTML entities never looks like &#00FC; It's hexadecimal, so there must be an "x" in between, or keep it decimal.

Thanks, corrected in my original post.

With HTML::Entities I get the expected result:

Looks pretty good!