Text Diff Checker Online
Compare two texts and highlight additions, deletions, and changes line by line. Side-by-side diff view.
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About Text Diff Checker
Compare two text blocks side-by-side with colour-coded diff highlighting. Green for additions, red for deletions, yellow for changed lines. Useful for comparing code, documents, translations, and configurations.
Text Diff Checker is a free, browser-based utility that requires no login, no signup, and no installation. All processing happens entirely within your web browser using JavaScript — your data never leaves your device. The tool works on all screen sizes including mobile phones, tablets, and desktop computers.
How to use
- Enter your values in the input fields — results update instantly as you type.
- No submit button needed. The tool calculates in real time.
- Copy your result or share it via WhatsApp or Twitter using the buttons above.
- Use the workflow links below to chain into related tools for a complete task.
- All processing is browser-only. Nothing you enter is sent to any server.
Tool details
⚡ Next step — complete your workflow
Frequently asked questions
Can I compare code files?
Yes. Paste code from two files to see line-by-line differences. No syntax highlighting — for full code diffing, use VS Code built-in diff editor.
Is diff case-sensitive?
Yes by default. You can toggle case-insensitive comparison to ignore case differences.
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