Text Diff Checker

What is Text Diff Checker?

Text Diff Checker compares two blocks of text and highlights lines that were added, removed, or changed. It is useful for reviewing document edits, comparing config file versions, or spotting changes in copied content.

How to use

1. Paste the original text into the left (Original) box.
2. Paste the modified text into the right (Modified) box.
3. Click Compare to see the diff. Added lines are highlighted in green, removed lines in red.

Notes

• Comparison is line-by-line. Inline word-level diffing is not performed.
• Empty lines count as lines and are included in the comparison.
• The tool works entirely in your browser  Etext is not uploaded anywhere.

FAQ

Can I compare code files?

Yes. Paste the contents of any plain text or code file. The diff is line-based, which matches how most code review tools work.

Does it detect moved lines?

No. Lines that are moved to a different position are shown as a deletion in the old location and an addition in the new location.

Is the comparison case-sensitive?

Yes. "Hello" and "hello" are treated as different lines.