UI
Building a shadcn Sidebar That Doesn't Fight You
A clear guide to the shadcn/ui sidebar — install, structure with SidebarProvider, make it collapsible and responsive, and wire it into a real app shell.
Search intent
Build a responsive app sidebar with shadcn/ui
Primary keyword: shadcn sidebar
The shadcn sidebar component is the fastest way to get a real, accessible app shell in a Next.js project. It ships as composable pieces you own, so you can theme it freely. The trick is understanding the provider pattern before you start nesting menus.
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Install and the provider pattern
Add the sidebar with the shadcn CLI, then wrap your layout in SidebarProvider. The provider owns the open/collapsed state and exposes it via context, so the trigger button and the sidebar stay in sync without prop drilling. Put the provider high in your App Router layout.
- Add it via the shadcn CLI so you own the source and can theme it.
- Wrap your root layout in SidebarProvider to share collapse state.
- Use SidebarTrigger anywhere inside the provider to toggle it.
Structure: header, content, footer
Compose the sidebar from Sidebar, SidebarHeader, SidebarContent, and SidebarFooter. Group navigation with SidebarGroup and SidebarMenu, and render each link as a SidebarMenuButton. Keeping a consistent structure makes active states and collapsing behave predictably.
- Header for logo/workspace switcher, footer for user menu.
- SidebarMenu + SidebarMenuButton for each nav item and active state.
- Group related links with SidebarGroup and labels.
Responsive and collapsible behavior
Set the collapsible mode (offcanvas, icon, or none) based on your app. On mobile the sidebar becomes a sheet automatically. Persist the collapsed state in a cookie so the layout does not flash on reload, and the server can render the right initial state.
- Choose collapsible=icon for a compact rail or offcanvas for mobile sheets.
- Persist open state in a cookie to avoid layout shift on reload.
- Test keyboard navigation — the component is accessible by default.
FAQ
Is the shadcn sidebar free?
Yes. shadcn/ui components are open source and copied into your project, so you own and can customize the sidebar code completely, with no runtime dependency or license fee.
Does the shadcn sidebar work with the Next.js App Router?
Yes. Put SidebarProvider in a layout, mark interactive pieces as client components, and read the persisted cookie on the server to render the correct initial collapsed state.