How to Use the Diff Checker
ToolPrime Team 2 min read
Comparing two versions of text is a common task for developers, writers, and editors. The ToolPrime Diff Checker highlights additions, deletions, and modifications between two text blocks. Choose between line-level and word-level diff modes for the right level of detail.
1 Open the Diff Checker
Navigate to the Diff Checker tool page.
2 Paste the original text
Enter the original (or "before") version in the left text area.
3 Paste the modified text
Enter the modified (or "after") version in the right text area.
4 Review the diff
Additions are shown in green, deletions in red. Toggle between line and word diff modes.
Common Use Cases
- Comparing code changes before committing
- Reviewing document edits between revisions
- Verifying configuration file changes
- Checking translation differences between language files
Pro Tips
Word-level diff is great for prose where small wording changes matter.
Line-level diff is better for code where entire lines are added or removed.
Copy the diff output to share with team members for review.
Try it yourself
Open Diff Checker