How to Use the Diff Checker

2. How to use the Diff Checker

Here is the whole process, step by step. It takes less than a minute from opening the tool to seeing your result.

1. 1Fill in the Original text, Changed text fields.
2. 2Choose an option if the tool offers one — "By line", "By word".
3. 3Your result appears on the page.

Press the "Compare" button and your result appears on the page.

Everything runs in your browser — your files and text never leave your device.

3. What you can do with it

• Switch between the modes the tool offers — "By line", "By word".
• Run the tool with the "Compare" button when your input is ready.

4. Tips for best results

1. Your text never leaves your device — The tool runs entirely in your browser using JavaScript. Nothing is uploaded, so you can paste private documents without worry. That also means there is no account to create and no file to upload.
2. It works on your phone too — Open the tool in any modern browser on Android or iPhone. The layout adjusts to the screen and everything works the same way on a small screen as on a desktop.
3. Pick the right option first — The tool offers "By line", "By word". Choose the one that matches what you need before you type, so the result comes out the way you expect.

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