Text Diff Checker

Compare two texts and highlight the differences. Find added, removed, and changed content between documents.

Original Text (Old Version)
Modified Text (New Version)
Comparison Results
0 additions
0 deletions
0 changes
Original Text
Modified Text

How to Use the Text Diff Checker

1. Enter your texts by pasting them into the respective text areas:

  • Original Text: The older version or baseline text
  • Modified Text: The newer version or text you want to compare against the original

2. Upload text files by clicking the "Upload Original" or "Upload Modified" buttons if you prefer to compare existing documents.

3. Adjust comparison options as needed:

  • Ignore Case: Treats uppercase and lowercase letters as the same
  • Ignore Whitespace: Ignores differences in spaces, tabs, and line breaks
  • Show Character-Level Differences: Highlights specific characters that differ within changed lines

4. Click "Compare Texts" to analyze the differences between the two texts.

5. View the results in your preferred format:

  • Side by Side: Shows the original and modified texts in parallel columns
  • Inline: Shows a unified view with additions and deletions marked inline

6. Interpret the color coding:

  • Green highlights indicate added content
  • Red highlights indicate removed content
  • Yellow highlights indicate changed content

Frequently Asked Questions

How accurate is the text comparison?

Our text diff checker uses advanced algorithms to identify differences between texts with high accuracy. It analyzes the content line by line and, when character-level differences are enabled, character by character. The tool can detect additions, deletions, and changes in the text, even when only small portions have been modified.

What's the difference between Side by Side and Inline views?

The Side by Side view displays the original and modified texts in parallel columns, making it easier to compare corresponding sections. The Inline view combines both texts into a single unified view, showing additions and deletions in context. Side by Side is often better for comparing larger blocks of text, while Inline can be more compact and easier to follow for documents with many small changes.

When should I use the "Ignore Case" option?

The "Ignore Case" option is useful when you want to focus on content differences rather than formatting changes. For example, if you're comparing two versions of a document where one might have title case headings and the other sentence case, but you only care about the actual content changes, enabling this option will prevent these case differences from being highlighted.

When should I use the "Ignore Whitespace" option?

The "Ignore Whitespace" option is helpful when comparing texts that might have different spacing, indentation, or line breaks but are otherwise identical in content. This is particularly useful when comparing code snippets or formatted documents where whitespace might vary but doesn't affect the meaning of the content.

What file formats can I upload?

You can upload text files (.txt), Microsoft Word documents (.doc, .docx), and rich text format files (.rtf). For complex documents, some formatting may be lost during the text extraction process.

Is there a limit to how much text I can compare?

The tool is designed to handle up to 50,000 characters per text area. For extremely large documents, you may experience some performance slowdown, especially on mobile devices. For best results with large texts, consider breaking them into smaller sections for comparison.

Can I use this tool for code comparison?

Yes, this tool works well for comparing code snippets or source files. For code comparison, you might want to enable the "Ignore Whitespace" option to focus on actual code changes rather than indentation or formatting differences.

Is my text data secure?

Yes, all text processing happens directly in your browser. Your text is never sent to our servers, ensuring complete privacy and security.