I’m looking for tools that follow this algorithm exactly and display the outline. Being able to export the outline as text would be nice, but it’s not required.
The tool should support at least one of these ways to input an HTML5 document:
- via HTTP URL (fetching it from the Web)
- via direct input (pasting the whole HTML document)
It doesn’t matter what kind of tool (stand-alone or integrated into browsers, text editors, …; for desktop, mobile or server; GUI or text-based), but please no web services (which can’t be installed on my own server).