Its one thing to make a feature suggestion to be helpful to the author and a completely different thing to provide armchair critique like this.
The tool they wrote is to do the job they wanted to do. If you want something else, build it. If it doesn't satisfy your needs or you're too lazy to fork it, move on.
With that said, the data (text and HTML) is literally in the assets dir of the repository which should make it easier for you to build your version of the tool. Did you bother looking?
Fortunately most of these things are open source, so there's always the 'well submit a PR' response. It's been so long since I slung HTML that I am fairly certain if I attempted it for a Show HN, folks would be so distracted by how bad it is they wouldn't pay attention to the utility of it.