Text Diff Checker
Compare two text snippets or code blocks side by side. Highlight additions, deletions, and inline differences with color-coded visual diffing.
What is Text Diff Checker?
Text Diff Checker is a visual comparison utility that computes differences between two versions of text or code, highlighting inserted, deleted, and modified lines.
How Text Diff Checker Works
The tool implements a line-by-line longest common subsequence (LCS) diffing algorithm in client JavaScript, generating structured change operations and rendering side-by-side color-coded blocks.
Key Features
- ✓Side-by-side and line-by-line visual comparison
- ✓Distinct color coding: green for additions, red for deletions
- ✓Line numbers for rapid navigation
- ✓Mobile-friendly stacked view on small screens
Common Use Cases
- •Comparing code revisions before committing changes
- •Verifying changes between two versions of a configuration file or contract
- •Troubleshooting subtle differences in API responses or database output
Examples & Sample Data
Comparing Config Changes
Original: port = 8080
Modified: port = 9000Line 1: - port = 8080 | + port = 9000Highlights exact line changes between versions.
100% Client-Side Privacy Guarantee
Comparisons run 100% locally in your browser. Sensitive code snippets are never transmitted to any server.
How to Use Text Diff Checker
- 1
Paste your original text on the left and modified text on the right.
- 2
Click 'Compare Diff'.
- 3
Review the visual additions (green) and deletions (red).