CSS and JavaScript support for local HTML pages

This is the question that decides everything: do CSS and JavaScript work? Without them a local site becomes a stack of plain text, and the whole exercise loses its point.

Styles render as authored

Stylesheets are resolved the way a browser would, including when they live in a subfolder. Layout, typography and images arrive as the author intended, not as fallback text.

Interactive pages keep working

From simple pages to rich, interactive sites, the content behaves as expected. Documentation with dynamic navigation, a report with collapsible sections, or a page that renders something on screen all stay usable.

What that changes in practice

It is the difference between consulting an exported documentation set and guessing at its structure. An archived site, a static site generator export or a page saved from a browser keeps its formatting and its navigation.

And still entirely local

Everything runs on your device. No content is sent to a server to be rendered, and that holds for pages that execute JavaScript too.