Online Perl POD renderer

metacpan.org's online POD preview is at https://metacpan.org/pod2html. Either paste the POD in the textarea or click the "Browse for file .." button, select the POD file you want to preview (which may be a .pm file including Perl code) and click "Render".

For an offline Pod renderer in the style of search.cpan.org have a look at pod2cpanhtml.

This question is about CPAN POD rendering, but it was also the top Google search for me for an online POD renderer not just an official one. In addition to CPAN's official one, there's an on-the-fly renderer written by Michał Wojciechowski that I've found super-helpful:

http://podwebview.odyniec.net/

He wrote a blog post about it and put the code on GitHub, in case the above link ever stops working.