What this tool helps with
Easily compare two text files to find the differences. Our online diff checker highlights additions and deletions, allowing you to see changes side-by-side or in a unified view.
Recommended workflow
- 1Select View Mode - Choose "Side by Side" or "Unified View" layout
- 2Select Diff Mode - Choose "Line Diff", "Word Diff", or "Character Diff"
- 3Input Text - Enter the original text on the left and the modified text on the right
- 4View Differences - The system automatically analyzes and highlights text differences. [25]
- 5Check Statistics - View statistics of added, removed, and unchanged content
- 6Copy Results - One-click copy the diff results to your clipboard
Capability details
- Line Diff - Compare text line by line, ideal for code and document comparison
- Word Diff - Compare by words, suitable for article content and prose modification comparison
- Character Diff - Compare by characters for precise, granular text difference analysis
- Side-by-Side View - Display original and modified text next to each other for easy comparison. [4]
- Unified View - Display input texts and diff results in a single vertical layout
- Whitespace Display - Option to show or hide spaces, tabs, and other whitespace characters
- Text Swap - One-click swap the left and right text content
- Diff Statistics - Displays detailed statistics of added, removed, and unchanged data
Practical use cases
- Code Review - Compare different versions of code files to see modifications and changes
- Document Editing - Compare document differences before and after editing to track all changes
- Configuration File Comparison - Compare config file differences to ensure correct deployment
- Data Validation - Compare data files to check for data consistency and integrity
- Translation Proofreading - Compare original and translated text to check translation quality
- Version Control - View specific changes in files between different commits or versions
- Content Proofreading - Compare different versions of articles or legal documents
- API Response Comparison - Compare differences in API response data for testing and debugging
Privacy, rights, and limits
Most processing is designed to run in the browser whenever possible, which makes the tool useful for quick personal or work files. For sensitive, production, or regulated material, test with a sample first and confirm the target platform's format, size, and quality requirements.
Common questions
Can I compare code files with this text diff tool?
Yes. You can paste code, configs, logs, or plain text and compare changes by line, word, or character.
When should I use side-by-side vs unified view?
Side-by-side is better for detailed review. Unified view is better for narrow screens or copying a compact change summary.
Do spaces and line breaks affect the diff?
Yes. Indentation, spaces, tabs, and line breaks are part of the text and may appear as differences.