Formatters & GeneratorsDocumentation
Diff Checker — Documentation
Compare source code or text files side-by-side with highlighted changes.
Overview
Diff Checker is a free online tool that lets you compare source code or text files side-by-side with highlighted changes. All processing happens right in your browser — your files never leave your device.
No cost
Free
Client-side
Privacy
Not required
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Quick Start
1
Paste original text on the left and modified text on the right to see color-coded differences.
Frequently Asked Questions
3 questionsReady to get started?
Open Diff Checker