I built a small browser extension that adds a command palette to Notion for navigating through your page hierarchy. Press Ctrl+B to open an overlay showing parent pages, headings on the current page, and subpages. Arrow keys to navigate, type to filter, Enter to jump.It stays open across page switches so you can move through deeply nested pages without touching the mouse. Works in any Chromium browser and Safari.
Three files, no permissions, no data leaves your browser — it just reads the DOM.
https://github.com/felixbrock/notion-breadcrumbs