How to Identify a Website Framework by Looking at Its File Structure

When you gain access to a website’s source code—whether via cPanel, SSH, FTP, GitHub, or a server directory—the file structure alone can often tell you what framework or stack the application is built on.

This guide provides a practical, sysadmin-oriented breakdown of how to recognize common web frameworks simply by inspecting directory layout and key files.

How to Identify a Node.js Application #

A Node.js backend application has several unmistakable indicators.

Key Files to Look #

package.json

package-lock.json or yarn.lock

node_modules/

server.js, app.js, or index.js

Typical Structure #

project-root/
│
├── node_modules/
├── package.json
├── package-lock.json
├── app.js / server.js / index.js
├── routes/
├── controllers/
└── public/

How to Confirm #

The presence of package.json is the strongest indicator.

Open package.json and check:

"dependencies": {
    "express": "^4.18.0"
}

Identifying a React Application #

React is primarily a frontend framework. It can exist standalone or inside a full-stack app.

Key Files #

• package.json
• src/
• public/
• node_modules/
• vite.config.js or webpack.config.js
• next.config.js (if using Next.js)

Typical React (Vite or CRA) Structure #

project-root/
│
├── node_modules/
├── public/
├── src/
│ ├── App.jsx
│ ├── main.jsx
│ └── components/
├── package.json
└── vite.config.js

How to Confirm #

Open package.json:

“dependencies”: {
“react”: “^18.0.0”,
“react-dom”: “^18.0.0”
}

If you see:

• next.config.js → it’s likely a Next.js React framework.
• .jsx or .tsx files → React-based frontend.

Identifying a Django Application (Python) #

Django has a very distinctive structure.

Key Files #

• manage.py
• settings.py
• urls.py
• wsgi.py or asgi.py
• requirements.txt

Typical Structure #

project-root/
│
├── manage.py
├── requirements.txt
├── projectname/
│ ├── init.py
│ ├── settings.py
│ ├── urls.py
│ ├── wsgi.py
│ └── asgi.py
└── appname/
├── models.py
├── views.py
└── admin.py

How to Confirm #

• manage.py is the strongest giveaway.
• settings.py and urls.py confirm Django.
• Python virtual environment folder like venv/ may also exist.

Identifying a Flask Application (Python) #

Flask is lightweight and less opinionated than Django.

Key Files #

• app.py or main.py
• requirements.txt
• venv/
• templates/
• static/

Typical Structure #

project-root/
│
├── app.py
├── requirements.txt
├── venv/
├── templates/
└── static/

How to Confirm #

Open app.py:

from flask import Flask
app = Flask(name)

Flask apps are usually simpler than Django—no manage.py, no project-level settings folder.

Identifying a WordPress Website #

WordPress has one of the most recognizable structures.

Key Folders #

• wp-admin/
• wp-content/
• wp-includes/

Key Files #

• wp-config.php
• wp-load.php
• index.php
• .htaccess

Typical Structure #

public_html/
│
├── wp-admin/
├── wp-content/
│ ├── themes/
│ ├── plugins/
├── wp-includes/
├── wp-config.php
└── index.php

If these folders exist, it is 100% WordPress.

Identifying a Plain PHP Website #

A basic PHP site without frameworks looks different.

Indicators #

• Multiple .php files in root
• No vendor/ folder
• No composer.json
• No structured MVC folders

Example Structure #

public_html/
│
├── index.php
├── about.php
├── contact.php
├── header.php
└── footer.php

This indicates procedural or custom PHP.

Identifying a Laravel Application (PHP Framework) #

Laravel has a very distinctive structure.

Key Files & Folders #

• artisan
• composer.json
• vendor/
• app/
• routes/
• storage/
• bootstrap/

Typical Structure #

project-root/
│
├── app/
├── bootstrap/
├── config/
├── database/
├── public/
├── resources/
├── routes/
├── storage/
├── vendor/
├── artisan
└── composer.json

How to Confirm #

• Presence of artisan file is decisive.
• composer.json contains:

“laravel/framework”: “^10.0”

• routes/web.php exists.

Identifying Framework via composer.json (PHP Ecosystem) #

If you see:

• composer.json
• vendor/

Open composer.json.

Examples: #

• "laravel/framework" → Laravel
• "symfony/symfony" → Symfony
• "codeigniter/framework" → CodeIgniter

Composer-managed PHP projects always include vendor/.

Sometimes framework clues appear in:

• .htaccess
• nginx.conf
• web.config

For example:

Laravel .htaccess typically routes all requests to public/index.php.

Node.js deployments may have:

• ecosystem.config.js (PM2)
• server.js

Django deployments may have:

• gunicorn.conf.py
• uwsgi.ini

In Conclusion #

As a technical support professional, understanding the framework a website is built on can significantly reduce troubleshooting time. It helps you quickly locate relevant error logs, identify database connections, recognize critical system files, and apply framework-specific fixes with confidence. Instead of relying on trial and error, you can diagnose issues faster, resolve incidents more efficiently, and provide more accurate support to clients.