🔍Text Diff Checker
Compare two texts side-by-side and see differences highlighted instantly. Free, fast, and completely private.
Original Text
Modified Text
💻 Code Review
Compare code before and after changes to review modifications and spot bugs.
📝 Document Editing
See what changed between drafts and track document revisions.
🌍 Translation Verification
Compare original and translated text to verify accuracy.
⚖️ Legal Documents
Compare contract versions to identify changes and amendments.
⚙️ Configuration Files
Spot changes in config files between environments or versions.
✍️ Proofreading
Identify edits made by collaborators or editors.
- Paste your texts - Enter the original text in the left panel and the modified text in the right panel
- Choose comparison mode - Select character, word, or line-level comparison based on your needs
- View differences - See additions highlighted in green and deletions in red automatically
- Customize options - Toggle “Ignore Case” or “Ignore Whitespace” for more flexible comparison
- Export results - Copy the diff to clipboard or download as a text file
📊 Multiple Comparison Modes
Choose between character, word, or line-level comparison for precise control.
👁️ Two View Modes
Switch between inline view and side-by-side view for easier comparison.
🎨 Color-Coded Differences
Additions in green, deletions in red for instant visual feedback.
📈 Statistics Display
See addition, deletion, and similarity percentages at a glance.
⚙️ Flexible Options
Ignore case sensitivity or whitespace differences when needed.
💾 Export Options
Copy to clipboard or download diff results as a text file.
🔒 100% Private
All comparison happens in your browser. No data sent to servers.
📱 Mobile Friendly
Responsive design works perfectly on phones and tablets.
How does the text diff checker work?
The tool uses a diff algorithm to compare two texts and identify differences. It highlights additions in green, deletions in red, and shows unchanged text normally. All processing happens in your browser, ensuring complete privacy.
What is the difference between character, word, and line comparison?
Character-level shows exact character differences (best for small changes), word-level compares whole words (good for readability), and line-level compares entire lines (perfect for code comparison). Choose based on your specific needs.
Is my text saved or sent to a server?
No. All text comparison happens locally in your browser using JavaScript. Your texts never leave your device and are not saved anywhere. This ensures complete privacy and security.
Can I compare code files?
Yes! The diff checker works great for comparing code, configuration files, JSON, XML, HTML, CSS, or any text-based content. Line-level comparison is particularly useful for code review.
Can I download the comparison results?
Yes, you can download the diff results as a text file with additions marked with “+” and deletions marked with “-”. You can also copy the diff to your clipboard.
What does “Ignore Whitespace” do?
When enabled, the tool treats multiple spaces, tabs, and line breaks as a single space. This is useful when comparing code with different indentation styles or texts with formatting differences.
Word Counter
Count words, characters, and sentences
Case Converter
Convert text between different cases