Runs fully in your browser. Inputs stay on your device. See recent fixes on changelog.
Diff Checker
Compare two texts side-by-side or inline with highlighted differences.
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Related Tools
About Diff Checker
Compare two texts side-by-side or inline with highlighted differences. Compare two texts or code snippets online for free. Side-by-side or inline diff with syntax highlighting. Everything runs client-side in your browser for maximum speed and privacy — no data is sent to any server, and no signup is required.
Related tools: JSON Formatter & Validator, Data Format Converter, Regex Tester
How to Use Diff Checker
- Enter your input into the tool.
- The tool processes it instantly in your browser.
- Copy the result to your clipboard.
Frequently Asked Questions
What is Diff Checker?
Compare two texts or code snippets online for free. Side-by-side or inline diff with syntax highlighting.
Is Diff Checker free to use?
Yes, it is completely free to use. It runs entirely in your browser with no signup, no account, and no usage limits.
Is my data safe when using Diff Checker?
Yes. All processing happens locally in your browser. No data is uploaded to any server, so your information stays private and secure.