Frequently Asked Questions
How does this text diff tool work?
Paste original and updated text, then run the diff to compare lines and highlight changes.
Can I compare code snippets with this diff?
Yes. The tool works well for code, logs, and plain text.
Is diff data sent to a server?
No. Text comparison runs locally in your browser.
Example input/output
Input: Left: The quick brown fox Right: The slow brown fox
Output: - The quick brown fox + The slow brown fox
How it works
This tool splits both text inputs by newline and runs a line-level diff algorithm. Lines unique to the left side are marked as removals (−), lines unique to the right side as additions (+), and unchanged lines are shown without markers. Processing runs in your browser.
Common use cases
- Compare two versions of a configuration file to spot differences
- Review changes between two code snippets side by side
- Diff two API response bodies to identify unexpected changes