Text Compare (Diff Checker)
Paste two texts to compare them side by side. Differences are highlighted line by line.
What is a Diff Checker?
A diff checker compares two blocks of text and highlights the differences between them. It shows which lines were added, removed, or left unchanged. This is essential for reviewing code changes, comparing document versions, or verifying edits.
How to Use This Tool
- Paste the original text on the left and the modified text on the right.
- Differences are highlighted automatically as you type — green for added lines, red for removed lines.
- Use Swap to flip the original and modified texts.
- The stats bar shows counts of added, removed, and unchanged lines.
Use Cases
- Compare two versions of source code
- Review edits in documents or articles
- Verify configuration file changes
- Check translation differences
- Debug API response changes
Features
- Line-by-line diff with color-coded output
- Live comparison as you type
- Stats showing added, removed, and unchanged line counts
- Swap button to quickly reverse the comparison
- Works entirely in your browser — no data is sent to any server