Hi @cableboy and @yogieanamcara,
Thanks for using the plugin.
There have been some recent contributions from the open source community to the plugin, specifically around better base URL re-writing, including support for local relative links.
I have not extensively tested these changes yet, but if you would like to try the latest development build of the plugin, you can download from here: https://github.com/leonstafford/wordpress-static-html-plugin/archive/master.zip and manually install the plugin.
With this, try setting your URL to / or file:///path/to/my/file.html
The next big release of the plugin is being crowdsourced now, which should see it released soon. I’ll be increasing the testing and ensuring things like local relative URLs work. Please feel free to help out and spread the word:
https://kickstarter.com/projects/1776117837/the-wp-plugin-that-speeds-up-and-secures-your-site
Cheers,
Leon