Diff Checker

Compare two blocks of text and highlight the differences.

Checking status...

About Diff Checker

Compare two blocks of text and instantly highlight additions, deletions, and modifications. This diff checker is perfect for developers comparing code versions or writers tracking content edits without needing complex version control systems.

How to Use

  1. Paste your 'Original Text' into the left-side input box.
  2. Paste your 'Modified Text' into the right-side input box.
  3. Click 'Check Differences' to start the comparison.
  4. View the highlighted changes (green for additions, red for deletions) and jump between differences.

Common Use Cases

  • Comparing different versions of a code snippet or configuration file.
  • Tracking edits made to an article, blog post, or legal document.
  • Identifying subtle changes in datasets or log outputs.

Technical Details

Uses the Myers diff algorithm to calculate the shortest edit script between two sequences. All processing is performed entirely within your browser.

Frequently Asked Questions

Can it compare by character or line?
Our tool is optimized for line-by-line comparison, which is the most common way to track changes in text and code.
Is there a line limit?
The tool can efficiently compare thousands of lines. Very large documents might take a moment to process.

100% Private & Secure

This tool runs entirely in your browser using client-side technology. Your files and data are never sent to a server, ensuring 100% privacy and speed.