DevToolKitHub

Text Diff Checker

Compare two versions of text or code and identify added, removed, and unchanged lines. Useful for code reviews, configuration changes, logs, and API responses.

Original text

Version A · 7 lines

Original

Modified text

Version B · 9 lines

Modified

Added lines

4

Removed lines

2

Unchanged lines

5

Comparison results

Green indicates additions; red indicates removals.

1 
const user = {
2 
  name: "Alex",
3-
  role: "user",
4-
  active: false,
3+
  role: "admin",
4+
  email: "[email protected]",
5+
  active: true,
6 
};
7
8 
console.log(user.name);
9+
console.log(user.role);

This is a line-level comparison. Replaced lines may appear as a removal followed by an addition. Line numbers refer to the corresponding original or modified text.

Comparison runs locally in your browser. Your text is not uploaded.