Diff Checker
Compare two texts and highlight the differences
How to Use This Tool
Paste Original Text
Enter or paste your original text in the left text area.
Paste Modified Text
Enter or paste your modified version in the right text area.
View Differences
The tool automatically highlights additions in green and deletions in red.
Choose View Mode
Switch between Unified view (inline changes) or Split view (side-by-side comparison).
Analyze Changes
See the count of additions and deletions to understand the scope of changes.
Pro Tips
- •Use the 'Swap' button to quickly switch the original and modified texts
- •Green highlights indicate added content, red highlights show removed content
- •Unified view shows changes inline, making it easier to follow the flow
- •Split view is better for comparing texts side-by-side
- •Load the sample to see an example of code refactoring differences
- •The tool performs line-by-line comparison for clear visualization
What is a Diff Checker?
A diff checker (difference checker) is a tool that compares two pieces of text, code, or documents to identify and highlight the differences between them. It's an essential utility for developers, writers, and anyone who needs to track changes between versions of text. Our diff checker uses advanced algorithms to perform line-by-line comparisons, showing additions, deletions, and modifications in an easy-to-understand visual format. Whether you're reviewing code changes, comparing document revisions, or verifying configuration updates, a diff checker helps you quickly understand what has changed and make informed decisions about those changes.
Key Features
Line-by-line comparison with visual highlighting
Unified view showing inline changes with context
Split view for side-by-side comparison
Color-coded differences (green for additions, red for deletions)
Line number tracking for easy reference
Character-level difference detection within changed lines
Statistics showing total additions and deletions
Swap function to reverse comparison direction
Support for any text format including code, JSON, XML
No file size limitations for comparison
Common Use Cases
Code Review: Compare code changes before merging pull requests, understand refactoring impacts, and ensure no unintended modifications were made during development cycles.
Document Versioning: Track changes between document revisions, compare drafts with final versions, and maintain an audit trail of content modifications for compliance or collaboration.
Configuration Management: Compare configuration files between environments (dev, staging, production), verify deployment changes, and troubleshoot configuration-related issues.
Content Editing: Review editorial changes in articles or documentation, track revisions made by team members, and ensure consistency across multiple versions of content.
Database Schema Changes: Compare SQL schema definitions, migration scripts, or database dumps to understand structural changes and plan database updates carefully.
API Contract Validation: Compare API responses or specifications to detect breaking changes, verify backward compatibility, and document API evolution over time.