Text Diff Checker

Compare two texts and highlight the differences

🔒 100% ブラウザ内🆓 ずっと無料⚡ サインアップ不要
注意: 下記のツールインターフェースは現時点で英語のみに対応しています。UI の翻訳は順次進めています。 このツールを英語で見る →
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使い方

  1. 1
    Paste original text

    Drop the first version into the left panel.

  2. 2
    Paste new text

    Drop the updated version into the right panel.

  3. 3
    See the diff

    Added lines appear green, removed lines red, unchanged lines gray.

Text Diff Checker について

Free online text diff checker. Paste two texts side by side to see additions, deletions, and unchanged lines highlighted. Perfect for comparing code, configs, contracts, or any two versions of a document. Runs entirely in your browser. 712 Tools の Text Diff Checker はモダンな JavaScript API を使って完全にブラウザ内で動作します - サーバーがあなたのデータを見ることは一切ありません。つまり、即時の結果、完全なプライバシー、アップロード制限なしです。

デバッグ、簡単な確認、あるいは本番のインシデント対応まで - このツールは何度でも無料で使えます。ウォーターマークなし、サインアップなし、ツール内広告なし。

よくある質問

Is it a line diff or a character diff?

This tool does a line-by-line diff using the Myers algorithm. That's the standard for git and most code review tools.

Does it handle very large files?

Yes - up to your browser's memory. Files over a few megabytes may take a second or two to render.

Is my text uploaded anywhere?

Never. Diffing runs entirely in your browser. Neither version leaves your device.

Can I export the diff?

Copy the highlighted output as plain text - the +/- prefixes match unified-diff format for pasting into commits or reviews.

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