Text Diff Checker
Professional text comparison tool for developers and writers. Compare texts side by side, highlight differences, and analyze changes with advanced comparison options.
Comparison Settings
Configure how texts should be compared
Original Text
Modified Text
Key Features
Understanding Text Diff
Tips & Best Practices
Frequently Asked Questions
How accurate is the diff algorithm?
Our algorithm uses the Longest Common Subsequence (LCS) method, providing accurate line-by-line comparisons similar to professional version control systems like Git.
What file formats are supported?
All text-based formats are supported: code files (.js, .py, .html, .css), documents (.txt, .md), data files (.json, .xml, .csv), and configuration files.
What do the ignore options do?
"Ignore Whitespace" focuses on content changes, "Ignore Case" for case-insensitive comparison, and "Ignore Punctuation" for text content analysis.
Is there a file size limit?
No strict limit, but files over 1MB may impact performance. For optimal speed, keep files under 100KB. Large files are processed but may take longer.
Can I export or share the results?
Yes, use "Export Diff" to save results as a text file. All processing is done locally in your browser, ensuring complete privacy and security.
How do I interpret the color coding?
Green lines are additions (new content), red lines are deletions (removed content), and white lines are unchanged. Line numbers help track positions.