Code Duplicate Checker

Detect and count duplicate code snippets

📖 User Guide

Click to view detailed usage instructions

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Code Duplicate Checker

Free online code duplicate detection tool to help developers find duplicate code snippets and improve code quality.

Features

  • Automatic duplicate code detection
  • Display repeat count statistics
  • Mark first occurrence location
  • Generate detection reports
  • Duplicate line ratio analysis
  • Optimization recommendations

How to Use

  1. Paste code to check
  2. Click "Find Duplicates" button
  3. View duplicate code list
  4. Optimize code based on suggestions

Use Cases

  • Code review assistance
  • Pre-refactoring analysis
  • Code quality assessment
  • Team code standards

💡 Detection Notes

  • • Only checks valid code lines over 10 characters
  • • Blank lines and comments are not included
  • • Consider extracting duplicate code into reusable functions