G'day Intrepid,

"... aging but probably still-useful module ..."

Everything about that module indicates that it is very old. I did a small amount of investigation.

• HTML 3.2 was superseded by HTML 4.01 last century. HTML5 is current. See W3C Standards - HTML publication history if you're interested in details.
• HTML::Tidy was last updated eight years ago.
  • It's a wrapper around tidyp whose website, https://tidyp.com/, shows "This domain for sale!".
  • The Repository Description has: "HTML::Tidy is no longer being maintained.".
  • See the GitHub repo for Changes, Issues and so on.

I'm not a user of any HTML::Tidy* modules; however, from my reading I'd suggest changing to HTML::Tidy5. Other monks with more familiarity may have a better answer.

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