LinkSnap

LinkSnap is a full-stack URL shortening application that converts long URLs into compact, shareable short links and reliably redirects users back to the original destination. The project consists of a frontend interface and a Python backend web server that manages link creation, storage, and redirection.

This project demonstrates core concepts of web development including HTTP request handling, RESTful API design, and frontend-backend integration.

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Features

• Shortens long URLs into unique short codes
• Redirects users from short links to the original URLs
• Clean and simple frontend interface
• Python backend web server with REST endpoints
• Persistent storage for shortened links
• End-to-end frontend and backend integration

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How It Works

URL Shortening Flow (POST Request)

1. The user enters a long URL in the frontend.
2. The frontend sends a POST request to the Python backend.
3. The backend validates the URL.
4. A unique short code is generated.
5. The mapping between the short code and the original URL is stored.
6. The backend returns the shortened URL to the frontend.

Example request and response:

POST /shorten
Body: { "url": "https://example.com/very/long/link" }

Response:
{ "short_url": "https://your-domain.com/abc123" }

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Redirection Flow (GET Request)

1. The user visits a shortened URL such as https://your-domain.com/abc123
2. The backend receives a GET request containing the short code.
3. The backend looks up the original URL associated with the code.
4. The server responds with an HTTP redirect.
5. The browser automatically navigates to the original URL.

This mirrors how production-grade URL shortening services work at the protocol level.

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Backend Architecture

• Built using Python
• Acts as a web server listening for HTTP requests
• Handles POST requests to create shortened links
• Handles GET requests to resolve short codes and redirect users
• Validates URLs before storing them
• Generates short codes programmatically
• Uses persistent storage to maintain URL mappings
• Returns appropriate HTTP status codes and responses

The backend is designed to be simple, readable, and easy to extend.

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Frontend Overview

• Provides a user-friendly interface for shortening links
• Sends requests to the backend API
• Displays the generated shortened URL
• Focuses on clarity, responsiveness, and ease of use
• Fully decoupled from backend logic

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Tech Stack

Frontend:

• HTML
• CSS
• JavaScript

Backend:

• Python
• HTTP server framework
• RESTful API design

Other:

• URL validation
• Persistent data storage
• Deployed backend environment

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Project Structure

LinkSnap/
├── backend/
│ ├── server.py
│ ├── database
│ └── utilities
├── frontend/
│ ├── index.html
│ ├── styles.css
│ └── scripts.js
└── README.md

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Why This Project

LinkSnap was built to understand how real-world URL shortening services work under the hood. It focuses on HTTP communication, backend API design, frontend-backend interaction, reliable redirection logic, and building a complete deployable full-stack application.

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Future Improvements

• Custom short codes
• Link expiration support
• Click analytics and tracking
• User authentication and accounts
• Custom domain support

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Getting Started

1. Clone the repository using: git clone https://github.com/haaaarsh4/LinkSnap.git
2. Start the Python backend server.
3. Open the frontend in your browser.
4. Paste a long URL and generate a shortened link.

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License

This project is open-source and available for learning, experimentation, and extension.