Text Diff Checker

What is this tool?

This text diff checker compares two blocks of plain text with a line-based diff. It highlights which lines were added, removed, or left unchanged, making small changes easier to review without opening a full code editor.

Line diffs are especially useful for configuration, prose, SQL, JSON after formatting, environment examples, generated output, and logs. They are less precise than a token-level or word-level diff when only part of a long line changes.

Use it as a quick review aid before committing, deploying, pasting into a ticket, or sharing a change with someone who needs to see exactly what moved.

How to use

1. Paste the original text into the original input.
2. Paste the changed text into the modified input.
3. Click Compare to compute a line-based diff.
4. Review unchanged, added, and removed lines in the highlighted result.

Related tools & concepts

• Diff overview
• JSON Formatter
• SQL Formatter
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