How can we increase traffic for our sideproject MarkdowntoWeb?

We made a writing and publishing macOS app called Author a few months ago and we wanted to increase our online traction by a side project.

Almost all Mac users are using markdown editors to write so we elaborate on that, and with this simple web app, you can turn your markdown into the online web page.

We tried producthunt, hackernews and reddit, but the traffic is not as high as we wished for.

Do you have any other ideas where people using markdown could find out about our sideproject tool http://markdowntoweb.com?