BluebirdBluebird
Home/Diff Checker

Diff Checker

Compare two blocks of text or code and see every change highlighted line-by-line or word-by-word.

  • Runs in your browser
  • No upload on server
  • Free, forever
How this works
  1. 1
    Paste both versions

    Drop the old text on the left, the new text on the right.

  2. 2
    Line-by-line diff

    Added lines glow green, removed lines glow red — see exactly what changed.

  3. 3
    Share the result

    Copy the diff or download it as a patch/text file.

Watch: differences light up between two inputs
  1. Paste original
  2. Paste the new version
  3. See what changed

Differences

+2 added −2 removed
function greet(name) {
  console.log("Hello, " + name);
  return name;
  console.log(`Hi there, ${name}!`);
  return name.trim();
}

Both texts stay in your browser. Diffchecker.com uploads everything you paste — Bluebird never does.

Rate Diff Checker

One tap. Anonymous. Helps others find the good tools.

No account, no email, no tracking — just a 1–5 number.

Be the first to rate