Developer utility
Standalone tool pageText Diff Checker — Compare Text Online
Compare two text blocks to quickly find added, removed, or modified content.
Original Text
Modified Text
Comparison Result
Removed Added
Enter text above to see differences here...
How It Works
Enter your values into Text Diff, let the browser process the data, and review the result instantly.
Example
Example: use Text Diff to test a scenario before making a decision.
When to use this tool
- Reviewing changes before sending a document.
- Finding a small typo between two large blocks of code or JSON.
- Comparing two versions of a contract or article.
How to use the Diff Checker
- Paste the original text into the left pane.
- Paste the new/modified text into the right pane.
- Differences are highlighted automatically. Red means deleted, green means added.
Frequently Asked Questions
Does this tool support code comparison?
Yes, it works well for code, but it treats everything as raw text. It will highlight line-by-line and word-by-word differences.
Is my data secure?
Yes. The comparison happens entirely in your browser using JavaScript. Nothing is sent to our servers.