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    Diff Checker

    Compare text, code or JSON — line, word, or structural — with unified and side-by-side views. Free and browser-only.

    Runs in your browser Unified + split view JSON structural diff

    Compare two texts

    +2 added-2 removed
    function greet(name) {
  return "Hello, " + name;
  return `Hello, ${name}!`;
}

const user = "Ada";
const user = "Grace";
greet(user);

    All diffing happens in your browser. We never log or store your input.

    What it does

    Three diff modes

    Line by line for code, word by word for prose, and structural for JSON (key-order independent).

    Two views

    Unified inline view for quick scanning, or split side-by-side view for detailed comparison.

    Private

    Powered by the open-source jsdiff library, running entirely in your browser. Your text is never uploaded.

    Frequently Asked Questions

    Quick answers about the diff checker.

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