Developer Tools
Diff Checker
Free diff checker — compare two texts to see what changed. Line-by-line and character-level highlighting with split view, unified view, and copy as patch.
How to use this tool
- Open the interactive tool on this page.
- Enter or select the information you want to process.
- Review the result, then copy or download it when that option is available.
Fast, free, and easy to access
HandyToolsOnline tools require no account. The interactive interface loads in your browser and is designed to work on desktop, tablet, and mobile devices.