Text Diff Checker
Compare two texts with advanced diff algorithms and visualization options
Original Text
Modified Text
How to Use the Text Diff Checker
- 1
Enter Your Texts
Paste your texts directly into the text areas or upload files. Supports various file formats including code files.
- 2
Choose Comparison Options
Configure options like ignoring whitespace, case sensitivity, and comparison algorithm to match your needs.
- 3
View & Analyze Results
See differences highlighted in multiple view modes, analyze statistics, and export results in various formats.
Powerful Features
Multiple View Modes
Switch between side-by-side and unified diff views. Show only changes or include context lines.
Smart Algorithms
Choose from line-by-line, word-by-word, character-by-character, or sentence-based comparison algorithms.
Export Options
Export results as HTML reports, unified diff patches, or JSON data for further processing.
Detailed Statistics
Get comprehensive statistics including similarity percentage, lines/words changed, and change summaries.
Flexible Options
Ignore whitespace, case differences, or configure context lines. Customize the comparison to your needs.
File Support
Upload text files, code files, or any text-based documents. Supports all major programming languages and formats.
Use Cases
For Developers
- Code review and change analysis
- Comparing configuration files
- Analyzing API responses
- Debugging text processing
For Content & Documents
- Document version comparison
- Content editing and revision tracking
- Contract and legal document changes
- Plagiarism and similarity checking
Frequently Asked Questions
What file formats are supported?
The tool accepts any text-based file including .txt, .md, .js, .ts, .html, .css, .py, .java, .cpp, .c, .php, .rb, .go, .rs, .kt, .swift and more. Binary files are not supported.
What's the difference between the comparison algorithms?
Line-by-line is best for code and structured text. Word-by-word works well for prose and documents. Character-by-character shows the finest detail but can be overwhelming. Sentence-by-sentence is ideal for comparing articles and essays.
Can I export the comparison results?
Yes! You can export results in multiple formats: HTML for sharing and viewing, unified diff patch format for version control systems, and JSON for programmatic processing.
Is there a file size limit?
Files are limited to 10MB for optimal performance. For very large files, consider breaking them into smaller sections or using desktop tools designed for large file comparison.
How accurate is the similarity percentage?
The similarity percentage is calculated based on the number of unchanged characters versus total characters. It provides a good general indication, but the meaning depends on your specific use case and the type of changes made.