Text Difference Checker Easily find and highlight differences between two text versions, code snippets, or documents. Ideal for developers, writers, and editors reviewing revisions. Quick Start

Paste your original text into the left textarea Paste your modified text into the right textarea Click Compare to see the differences highlighted

The tool will automatically compare the texts line-by-line and show you additions (in green), deletions (in red), and unchanged lines. Features Line-by-Line Comparison Compare texts line by line with precise difference detection using longest common subsequence (LCS) algorithm. Visual Highlighting

Green highlights show added lines Red highlights show removed lines Plain text shows unchanged lines

Statistics Dashboard View at-a-glance metrics including:

Number of lines added Number of lines removed Number of unchanged lines Total line counts for both versions

Export Options Export your comparison results in multiple formats:

Text format - Unified diff format compatible with patch tools HTML format - Styled comparison for viewing in browsers

History Tracking (Pro) Pro users get automatic history of all comparisons for easy reference. How to Use Basic Comparison

Open the Text Difference Checker tool Copy your original text and paste it into the "Original Text" field Copy your modified text and paste it into the "Modified Text" field Click the "Compare Texts" button Review the highlighted differences in the results panel

Understanding the Output The comparison results show three types of changes:

Lines with green background: These lines were added in the modified version Lines with red background: These lines were removed from the original version Lines with no background color: These lines are unchanged between versions

Each line includes a line number on the left for easy reference. Exporting Results After comparing your texts:

Click "Export as Text" to download a unified diff format file Click "Export as HTML" to download a styled HTML comparison

The exported files include timestamps and can be archived for future reference. FAQ Q: What types of text can I compare? A: You can compare any plain text including source code, configuration files, documentation, articles, scripts, and more. The tool works with any text-based content. Q: Is there a limit on text size? A: Free users can compare texts up to 100,000 characters each. This is sufficient for most documents and code files. Q: How accurate is the comparison? A: The tool uses a longest common subsequence (LCS) algorithm which provides highly accurate line-by-line comparison, the same algorithm used by professional diff tools. Q: Can I compare more than two versions? A: Currently, the tool compares two versions at a time. To compare multiple versions, you can perform multiple comparisons sequentially. Q: What format is the exported text file? A: The text export uses the unified diff format, which is compatible with patch utilities and version control systems. Lines starting with '+' are additions and lines starting with '-' are deletions. Q: Does the tool preserve formatting? A: The tool preserves line breaks and whitespace. However, for HTML export, special characters are escaped for proper display. Q: Can I use this for code review? A: Yes! The tool is ideal for code review as it clearly highlights what changed between code versions. The monospace font makes it easy to read code. Examples Example 1: Code Comparison Original Text: function calculateTotal(price, quantity) { return price quantity; } Modified Text: function calculateTotal(price, quantity, taxRate = 0) { const subtotal = price quantity; return subtotal + (subtotal * taxRate); } Result: The tool will show that the function signature was modified to add a taxRate parameter, and two lines were changed in the function body.

Example 2: Document Revision

Original Text: Project Deadline: March 15 Budget: $50,000 Team Size: 5 people Modified Text: Project Deadline: March 22 Budget: $55,000 Team Size: 6 people Location: Remote Result: The comparison will highlight that all three lines were modified with new values, and a new "Location" line was added.

Example 3: Configuration File

Original Text: port=8080 host=localhost debug=false Modified Text: port=3000 host=0.0.0.0 debug=true cache=enabled Result: Shows that all configuration values changed and a new cache setting was added. Troubleshooting Comparison not working

Ensure both text fields contain content Check that you haven't exceeded the 100,000 character limit Try refreshing the page and attempting again

Results look incorrect

Verify you pasted the texts in the correct order (original first, modified second) Check for hidden characters or formatting that might affect comparison Try comparing smaller sections if the texts are very large

Export not downloading

Check your browser's download settings Ensure pop-ups are not blocked Try a different browser if issues persist

Daily limit reached

Free users have a daily limit of 10 comparisons Sign in for higher limits or upgrade to Pro for unlimited access

Need more help? Contact support at support@bulkcreator.com