Diff Checker
Compare two texts and visualize differences. Identify additions, deletions and modifications line by line. Free diff tool.
Statistics
Result
Diff Checker: Visualize the Differences
The Diff Checker is a free tool that allows you to compare two versions of text and instantly visualize the differences. Perfect for developers, writers, and editors.
Paste your two texts, click compare, and instantly see what has been added, modified, or removed.
How to Use
- Paste the original text in the first field
- Paste the modified text in the second field
- Click "Compare"
- Differences are displayed with color coding
- Analyze modification statistics
Difference Color Coding
Green - Additions
Text added in the new version.
Red - Deletions
Text removed from the original version.
Gray - Unchanged
Identical text in both versions.
Yellow - Modifications
Lines changed between versions.
Use Cases
Code Review
Compare code versions before and after changes for pull requests.
Document Editing
Visualize changes between different document revisions.
Plagiarism Detection
Compare texts to identify similarities and differences.
Data Analysis
Compare CSV or JSON files to detect data changes.
Understanding the Statistics
- Lines Added: Number of new lines in the modified text.
- Lines Deleted: Number of lines removed from the original text.
- Lines Modified: Lines that were changed but not completely replaced.
- Similarity Percentage: Rate of common content between both texts.
Comparison Algorithm
Our diff checker uses the Longest Common Subsequence (LCS) algorithm to identify differences:
- Line-by-line analysis for overview
- Character-level detection for minor changes
- Optimized for large files
- Fully local processing (no data sent)