Text Diff Checker
Compare two texts and visualize the differences. Perfect for code review, document comparison, and version control.
Options
How to Use
Configure Options
Choose your comparison preferences: ignore whitespace, ignore case, and select your preferred view mode (side-by-side or unified).
Paste Your Texts
Paste your original text in the left box and the modified text in the right box, or load sample data to test.
Compare Texts
Click "Compare Texts" to see the differences highlighted with color coding and statistics.
Review Results
Review the highlighted differences with line numbers. Green indicates additions, red shows deletions, and yellow marks modifications.
Key Features
Side-by-Side View
Compare texts in parallel columns to easily spot differences between original and modified versions.
Unified Diff View
View differences in a single column with +/- indicators, similar to Git diff output.
Color-Coded Differences
Green highlights additions, red shows deletions, and yellow indicates line modifications.
Line Numbers
Each line is numbered for easy reference and navigation through the differences.
Ignore Options
Optionally ignore whitespace or case differences to focus on meaningful content changes.
Statistics
View summary statistics showing additions, deletions, modifications, and unchanged lines.
Common Use Cases
Code Review
Compare code versions to review changes before committing or merging pull requests.
Document Comparison
Compare different versions of documents, contracts, or articles to track changes.
Configuration Files
Compare configuration files to identify differences between environments or versions.
Content Updates
Track changes in website content, blog posts, or marketing copy between revisions.
Data Validation
Compare data exports or reports to identify discrepancies and validate accuracy.
Translation Review
Compare original and translated texts to ensure accuracy and completeness.
Frequently Asked Questions
How does the text diff checker work?
The tool compares two texts line by line and identifies additions (lines only in the modified text), deletions (lines only in the original text), modifications (changed lines), and unchanged lines.
What's the difference between side-by-side and unified view?
Side-by-side view shows both texts in parallel columns for easy visual comparison. Unified view shows all changes in a single column with +/- prefixes, similar to Git diff format.
What does "ignore whitespace" do?
When enabled, leading and trailing spaces are removed before comparison, so lines that differ only in whitespace are treated as identical.
What does "ignore case" do?
When enabled, the comparison becomes case-insensitive, treating "Hello" and "hello" as identical lines.
Is my data secure?
Yes! All text comparison happens entirely in your browser. Your texts are never sent to any server and never leave your device.
Can I compare large files?
Yes, the tool can handle large text files. However, very large files (thousands of lines) may take a moment to process depending on your device's performance.