Developer Tools Hub

Text Processing

Text Diff Checker

Compare two pieces of text and highlight differences.

Local processing

This tool is designed to run in your browser. Do not paste secrets or production credentials into any online tool.

How to use this tool

Paste your input, choose an action, review the result, then copy the output when it looks correct. Invalid input shows a readable error instead of silently changing your data.

Example

Input

Hello world
---
Hello tools

Output

-Hello world
+Hello tools

FAQ

Does text diff upload my content?

No. Comparison happens locally in your browser.

Can it compare JSON text?

Yes. For structured JSON, format both sides first for clearer diffs.

Can I copy the diff?

Yes. The diff output is copyable.