Drop a folder, ZIP, or GitHub URL and Codeverview generates an interactive diagram of every route, function call chain, and key logic branch — so you onboard in minutes, not days.
No signup. No credit card. Just your code.
Works with your stack
Features
Codeverview surfaces the structure that takes days to map manually — in seconds, right in your browser.
No account, no login, no API keys needed. Drop your code and the diagram appears instantly in your browser.
React Flow canvas with zoomable, pannable nodes. Click any route to expand its full function call chain.
Powered by Ollama (offline) or your preferred provider. Get plain-English explanations of any route or function.
Upload a local folder, drop a ZIP archive, or paste a public GitHub URL — all three paths produce the same rich diagram.
Detects route handlers, middleware, auth guards, data models, and logical branches across your entire codebase.
Works with Next.js, Express, Fastify, NestJS, and more. Understands both file-system and decorator-based routing.
How It Works
Select a local folder, upload a ZIP, or paste a GitHub repository URL. Codeverview reads the file tree instantly.
The parser walks every file, extracts routes, functions, imports, and call chains, then builds a structured graph.
An interactive canvas appears with colour-coded nodes. Expand routes, trace calls, and ask the AI for explanations.
Free & Open Source
No account needed. Just open the app and drop your code. The interactive diagram is ready in seconds.
Open Codeverview