Automatic Sidebar Generation

Nextra builds the sidebar automatically from the content/<locale>/ directory tree: every MDX file becomes a page entry, and every nested folder becomes a collapsible section without any manual navigation config. _meta.ts files (plain JS/TS modules, not JSON) let a page or folder override its display label, ordering, or icon while leaving the underlying route untouched, so authors can reorganize the sidebar independently of the URL structure.

This site’s own sidebar is generated exactly this way and is a live example rather than a mockup: the “Comparison Criteria” section you are browsing right now, and the “Features” and “Guide” sections alongside it, are each produced from a folder under content/en/ plus that folder’s _meta.ts. Adding a new MDX file under content/en/criteria/ is enough for it to appear in the sidebar; no separate navigation file has to be updated by hand.