Browser-based array diff and array compare with visual highlighting - compare Python lists, JavaScript arrays, and more
🔒 100% Client-Side free array diff and array compare tool for online array comparison across all programming languages. Compare arrays and find changes with array diff in Python lists, JavaScript arrays, PHP arrays, Ruby arrays, Go slices, and nested data structures with visual array compare highlighting.
The most comprehensive array diff and array compare tool online for array changes detection across all programming languages. Free array compare for Python lists, JavaScript arrays, PHP arrays, Ruby arrays, Go slices, Java arrays, and more with visual array diff highlighting. Perfect for API response array compare, configuration diff analysis, and data migration testing.
Common Array Compare Use Cases:
API Response CompareConfiguration ComparePython Array CompareArray Compare OnlineData Migration TestingCopy and paste your arrays (from any programming language) into the two input panels. Supports arrays with strings, numbers, objects, and nested arrays from Python, JavaScript, PHP, Ruby, Go, and more.
Click "Compare Arrays" to see the differences highlighted in real-time. Added elements are green, removed are red, and modified are yellow.
Review the detailed comparison results with element counts and visual indicators for each type of change.
Practical examples where array comparison saves developers time and prevents bugs across all programming languages.
Compare REST API responses before and after version updates to ensure backward compatibility.
Before: [{"id": 1, "name": "John"}] → After: [{"id": 1, "name": "John", "email": "john@example.com"}]Validate configuration arrays across different environments to prevent deployment issues.
Staging: [{"feature": "auth", "enabled": true}] vs Prod: [{"feature": "auth", "enabled": false}]Compare expected vs actual test results to identify failures and data inconsistencies.
Expected: [{"status": "success", "count": 5}] vs Actual: [{"status": "success", "count": 3}]Compare database query results before and after migration to ensure data integrity.
Old: [{"user_id": 1, "role": "admin"}] → New: [{"userId": 1, "permissions": ["read", "write"]}]Unlike server-based tools, our array compare tool processes everything in your browser. Your sensitive data never leaves your device, making it perfect for array compare of proprietary API responses, configuration files, and confidential arrays from Python, JavaScript, PHP, Ruby, and more.
Get instant visual array compare highlighting with color-coded differences. Our free array compare tool highlights added (green), removed (red), and modified (yellow) elements, making it easy to compare arrays from Python lists, JavaScript arrays, PHP arrays, Ruby arrays, Go slices, and nested structures.
Beyond simple array diff operations, our array compare tool performs deep comparison of nested arrays and objects. Compare arrays in multi-dimensional arrays, API response data, and complex data structures from Python, JavaScript, PHP, Ruby, Go, and more with semantic understanding of data types.
Built by developers for developers. Features include syntax highlighting, element indexing, keyboard shortcuts (Ctrl+L for sample data, Ctrl+Enter to compare array diff), and mobile-responsive design for array diff operations on any device. Perfect for configuration array diff analysis and merge conflict resolution.
Pure JavaScript implementation with no external libraries. Lightning-fast array diff operations with optimized array diff algorithms that handle large Python lists, JavaScript arrays, and datasets from any programming language efficiently. Client-side array diff tool that works offline and loads instantly without any setup.
Supports various array formats from all programming languages including Python lists, JavaScript arrays, PHP arrays, mixed data types, nested structures, and complex objects. Perfect for API response comparison, configuration diff analysis, and database query results from Python, JavaScript, PHP, Ruby, Go, Java, C#, and more.
ArrayDiff supports JavaScript arrays containing strings, numbers, booleans, objects, nested arrays, and null values. JSON-formatted data is fully supported.
Yes! All comparison processing happens entirely in your browser. No data is sent to our servers, ensuring complete privacy and security.
ArrayDiff can handle large arrays efficiently. Performance depends on your device, but arrays with thousands of elements work smoothly.
Absolutely! ArrayDiff performs deep comparison of nested structures, highlighting differences at any level of nesting.
Our browser diff tool supports arrays from all programming languages including Python lists, JavaScript arrays, PHP arrays, Ruby arrays, Go slices, Java arrays, C# arrays, and any language that outputs JSON-formatted data structures.
Unlike server-based diff tools, our online diff tool processes all data locally in your browser. Your arrays and data never leave your device, making it perfect for comparing sensitive API responses, configuration files, and proprietary data structures.
Absolutely! Our diff tool is perfect for API response comparison. You can compare JSON arrays returned by different API endpoints, test API changes, validate data transformations, and ensure backward compatibility during API development.