Text Diff Checker

Compare two texts and see the differences highlighted. Find additions, deletions, and modifications instantly.

0
Additions
0
Deletions
0
Unchanged
Enter text in both fields and click Compare to see differences.

How to Use

1

Paste Original

Enter or paste your original text in the left text area.

2

Paste Modified

Enter or paste the modified version in the right text area.

3

Compare

Click "Compare" to see the differences highlighted.

4

Review Changes

Green shows additions, red shows deletions. Toggle between unified and side-by-side views.

FAQ

What algorithm is used for diff?

This tool uses a line-by-line diff algorithm similar to the Unix diff command. It identifies additions, deletions, and unchanged lines between the two texts.

What do the colors mean?

Green indicates lines added in the modified text. Red indicates lines deleted from the original. White/unchanged lines appear in both texts.

What's the difference between unified and side-by-side view?

Unified shows all changes in a single column with +/- prefixes. Side by side shows original and modified texts in parallel columns for easier comparison.

Is there a size limit?

The tool works best with texts up to 10,000 lines. Larger texts may be slower to process. All processing happens in your browser.

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