Advanced Code Diff Checker

Professional code comparison tool with syntax highlighting, file upload support, and advanced diff options. Compare code in 190+ programming languages with side-by-side visualization.

Original Code/Text
Modified Code/Text

Comparing files...

Comparison results:
Added Lines
Removed Lines
Modified Lines

How to Use Advanced Code Diff Checker

Basic Usage

  1. Paste your original code/text in the left panel or upload a file
  2. Paste the modified version in the right panel or upload a file
  3. Click "Compare Differences" to see highlighted changes
  4. Use advanced options to customize the comparison

Advanced Features

  • File Upload Support: Upload and compare files directly (.txt, .js, .py, .java, .html, .css, etc.)
  • Syntax Highlighting: Automatic detection and highlighting for 190+ programming languages
  • Ignore Options: Skip whitespace differences or case sensitivity
  • Inline Diffs: See word-level differences within changed lines
  • Line Numbers: Toggle line number display for easy reference
  • Multiple Themes: Choose from Dark, Light, VS, and Atom themes
  • Side-by-Side View: Professional Git-style diff visualization

Professional Use Cases

  • Code Review: Compare code versions before committing to Git repositories
  • Merge Conflicts: Resolve conflicts in collaborative development projects
  • Documentation: Track changes in README files, API docs, and specifications
  • Configuration Files: Compare config files, JSON, XML, and YAML
  • Database Scripts: Compare SQL scripts and database migrations
  • API Testing: Compare API responses and data exports
  • Quality Assurance: Verify changes in test files and automation scripts

Supported Languages

Web Technologies:
JavaScript, TypeScript, HTML, CSS, SCSS, JSON, XML
Backend Languages:
Python, Java, C#, PHP, Ruby, Go, Rust, C++
Data & Config:
SQL, YAML, CSV, Markdown, INI, TOML
Mobile & Others:
Swift, Kotlin, Dart, Shell, PowerShell, Batch