Text Diff Checker
Compare two texts and find differences with line-by-line comparison. Perfect for code review, document comparison, and tracking changes.
About Text Diff Checker
Our free Text Diff Checker helps you compare two versions of text and identify exactly what has changed. Whether you're reviewing code changes, comparing document versions, or tracking edits, this tool provides a clear visual diff with line-by-line comparison.
How to Use
- Paste your Original Text in the left input area.
- Paste your Modified Text in the right input area.
- Choose comparison options: ignore whitespace, ignore case, or character-level diff.
- Click Compare Texts to generate the diff.
- Review the statistics showing lines added, removed, changed, and unchanged.
- Examine the highlighted differences in the result panel.
- Use Copy Diff Result to copy the comparison.
Features Explained
Line-by-Line Comparison: Each line is compared individually to identify additions, deletions, and modifications.
Character-Level Diff: When enabled, shows exactly which characters changed within modified lines.
Ignore Whitespace: Disregards spaces, tabs, and line breaks when comparing.
Ignore Case: Treats uppercase and lowercase letters as identical.
Statistics: Get a quick overview of how much content changed.
Common Use Cases
Code Review: Compare different versions of code to see what changed.
Document Tracking: Track edits in legal documents, contracts, or creative writing.
Content Management: Verify changes made by editors or collaborators.
Configuration Files: Compare before and after states of config files.
Frequently Asked Questions
Is my text sent to a server?
No. All comparison happens entirely within your browser. Your text is never transmitted to our servers or stored anywhere.
What's the maximum text size?
The tool can handle thousands of lines of text. However, extremely large texts (100,000+ lines) may impact browser performance.
How does character-level diff work?
When enabled and two lines differ, the tool highlights specific characters that were added (green) or removed (red with strikethrough) within those lines.
Can I compare binary files?
No, this tool is designed for text comparison only. Binary files should use specialized binary diff tools.
Does it support all Unicode characters?
Yes! The diff tool fully supports Unicode text including special characters, emoji, and non-Latin scripts.