Text Compare Tool
Compare two text documents side by side and highlight the differences. Perfect for developers, writers, and anyone who needs to find changes between text versions.
How to Use Text Compare
- Paste or type your original text in the left text area
- Paste or type your modified text in the right text area
- The comparison will automatically show differences below
- Use the options above to customize how differences are detected
- + Green lines with +: Lines added in the modified text
- - Red lines with -: Lines deleted from the original text
- Gray lines: Lines that are the same in both texts
- Ignore whitespace: Ignores spaces, tabs, and line breaks when comparing
- Ignore case: Treats uppercase and lowercase letters as the same
- Show line numbers: Displays line numbers for easier reference
- Swap button: Swaps the positions of the two texts
Frequently Asked Questions
A text compare tool, also known as a diff tool, is used to find and highlight differences between two text documents. It's commonly used by:
- Developers to review code changes before committing
- Writers and editors to track document revisions
- Students to compare different versions of essays or papers
- Legal professionals to identify changes in contracts or agreements
- Content managers to review website copy updates
This tool uses a line-by-line comparison algorithm that accurately detects additions, deletions, and modifications. The comparison is precise down to individual characters. You can further improve accuracy by:
- Using "Ignore whitespace" for code or formatted text
- Using "Ignore case" when letter case isn't important
- Ensuring both texts use consistent line breaks (LF or CRLF)
Yes! This tool is perfect for comparing code files. It supports:
- All programming languages (JavaScript, Python, Java, C++, etc.)
- Configuration files (JSON, YAML, XML, etc.)
- Markup languages (HTML, Markdown, etc.)
- Plain text files
The monospace font and line-by-line comparison make it easy to spot code changes.
This tool processes text entirely in your browser, so the main limitation is your device's memory and performance. For best results:
- Files under 1 MB: Excellent performance
- Files 1-5 MB: Good performance
- Files over 5 MB: May experience slowness
For very large files, consider using desktop diff tools designed for high-performance comparisons.
The Text Compare tool:
- Processes all text locally in your browser
- Never sends your data to any server
- Does not store or save any of your text
- Works completely offline once the page has loaded
- No tracking or analytics on your input data
Your sensitive documents remain completely private on your own device.
Common Use Cases
👨💻 Software Development
- Review code changes before commit
- Compare API responses
- Check configuration file updates
- Validate database schema changes
📝 Content Writing
- Track document revisions
- Compare article versions
- Review editorial changes
- Check translation differences
⚖️ Legal & Business
- Compare contract versions
- Review policy updates
- Track agreement changes
- Audit document modifications
🎓 Education
- Compare essay drafts
- Track assignment changes
- Review study notes versions
- Check plagiarism similarities
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