It would be nice if as part of the zero config effort, programs (esp. programs that aim to be easy-to-use Web-authoring tools) would focus even more on being as close to zero setup/zero installation as possible, too. To wit:
This program is written in TypeScript, a browser-incompatible dialect of JS that is nonetheless regularly compiled to standard JS, e.g. to transform a given module into a form that can run in the browser—and yet md2blog itself doesn't. You are expected to either download an out-of-band, platform-specific binary or use Deno to run it.
Instead, one should be able to use md2blog and similar programs by using the browser itself to open and run the program, considering it's the universal platform that everyone already has, and it's reasonable to expect that you're going to use it at some point in the pipeline, anyway (e.g. for proofing your work).
Even better quick start instructions would look something like this:
0. Start with a directory that contains the site sources that you intend to publish.
1. Save a copy of "md2blog.html" there, too (or anywhere, really).
2. Open the md2blog program in your browser by double clicking md2blog.html.
3. Drag and drop the directory with your Markdown sources (same one from steps 0 and 1) into the newly opened md2blog tab.
(For good measure, a copy of these quick start instructions would be shown when you open md2blog.html.)