Utilz
Text Diff Checker
Compare two texts and highlight differences
Why Use This Tool?
- Compare two texts side by side and spot every addition, deletion, and change instantly.
- Color-coded diff output makes it easy to review changes at a glance.
- Toggle between unified and split view modes depending on your preference.
How to Use
- Paste or type the original text in the left panel
- Paste or type the modified text in the right panel
- Differences are highlighted automatically: green for additions, red for deletions
- Toggle between unified and split view
FAQ
How does the diff algorithm work?
The tool uses a line-by-line comparison algorithm. Added lines are shown in green, deleted lines in red. The algorithm finds the longest common subsequence to minimize the number of changes shown.
What is the difference between unified and split view?
Unified view shows all changes in a single column with + and - prefixes. Split view shows the original and modified text side by side, making it easier to compare large texts.
Is there a character limit?
There is no hard limit. Processing happens in your browser, so very large texts (over 100,000 lines) may take a moment to process.
Can I compare code files?
Yes. Paste any text including source code. The diff output highlights added and deleted lines, making it useful for comparing code changes, configuration files, and documents.
What diff algorithm does this tool use?
This tool uses a standard line-by-line diff algorithm similar to Unix diff. It highlights added, removed, and changed lines between the two input texts.