Code Similarity & Plagiarism Detection Tool

A full-stack C++ code similarity checker built with React, Node.js, and Express.

Features

• Removes comments and normalizes formatting before comparison
• Detects token-level and structure-level similarity
• Handles variable renaming and loop rewrites such as for, while, and do while
• Highlights matching code sections side by side
• Generates plagiarism risk reports with confidence badges
• Flags suspicious transformations such as renamed identifiers, changed literals, and preserved I/O patterns
• Compares functions independently
• Supports batch file comparison
• Exports reports as JSON or printable PDF

Tech Stack

• Frontend: React, HTML, CSS
• Backend: Node.js, Express
• Language focus: C++

Run Locally

cd backend
npm install
npm start

Open:

http://localhost:5050

Test

cd backend
npm test