Text Diff Checker
Free online text diff tool. Paste two texts and instantly see added, removed, and unchanged lines highlighted side by side. Perfect for comparing code, documents, and configs.
Original
Modified
Paste text into both fields above to see the diff
How to Use
Paste original text
Enter the original (before) text in the left field.
Paste modified text
Enter the modified (after) text in the right field.
View the diff
The diff updates automatically. Green lines are additions, red lines are deletions, and white lines are unchanged.
Filter results
Click "Show changes only" to hide unchanged lines and focus on what actually changed.