AVAILABLE FOR WEB, FLUTTER & QA PROJECTS
How to use this tool
1. Select App Template Preset
Choose SaaS Dashboard, Marketing & Blog, E-Commerce Store, or start with a custom architecture.
2. Toggle Advanced Routing Features
Enable Route Groups (group), Parallel Routes (@modal/@analytics), Dynamic Segments [slug], and Catch-all [...path].
3. Include Standard Special Files
Select layout.tsx, loading.tsx, error.tsx, not-found.tsx, and route.ts API endpoints.
4. Copy Directory Tree & Scaffold Commands
Copy the formatted ASCII folder tree or one-line bash mkdir/touch scaffolding commands.
Formula or logic used
Next.js 15 App Router Directory Conventions
Next.js App Router relies on folder-based filesystem routing where only folders containing a page.tsx or route.ts file become publicly accessible URLs.
Route Groups: Folders named `(groupName)` organize code without affecting URL path structureDynamic Segments: Folders named `[slug]` match single parameters; `[...slug]` matches catch-all path segmentsParallel Routes: Folders named `@slotName` pass simultaneous independent sub-pages into the parent `layout.tsx`Special File Hierarchy: `layout.tsx` (wraps children) > `template.tsx` (re-renders on nav) > `error.tsx` (boundary) > `loading.tsx` (Suspense) > `page.tsx`
Examples
Example 1: B2B SaaS Portal with Authentication Route Group
Keeps auth and dashboard styling separate with isolated root layout structures.
Example 2: E-Commerce Storefront with Dynamic Products
Clean nested dynamic parameters with server-side metadata generation.
Common use cases
App Router Architecture Design
Plan clean, scalable folder structures before writing code on greenfield Next.js projects.
Pages Router to App Router Migration
Map legacy pages/ directory structures to modern app/ nested layouts and route groups.
Parallel & Intercepting Modals
Design URL-driven modals (like Twitter photo feeds or login popups) using @modal slots.
Scaffolding Automation
Generate shell scripts to create folders, page.tsx, and layout.tsx files automatically.
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Frequently asked questions
What is the purpose of route groups (folderName) in Next.js?
Route groups (surrounded by parentheses) allow you to organize folders without creating URL path segments. They are commonly used to apply distinct layout wrappers to different sections (e.g. (marketing) vs (dashboard)).
What is the difference between layout.tsx and template.tsx?
A layout persists across route transitions and maintains its state without re-rendering. A template creates a fresh component instance on every navigation, resetting state and triggering enter animations.
How do Parallel Routes work in Next.js?
Parallel routes (named `@slot`) allow you to render multiple pages simultaneously inside the same layout (e.g. `@dashboard` and `@analytics`). The parent layout receives both slots as props.
Can an App Router folder contain both page.tsx and route.ts?
No. A folder cannot have both page.tsx and route.ts at the exact same path level because Next.js cannot resolve whether to return an HTML document or an API JSON response.
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