100% Browser-Based • No Upload • Free

Free Diff Checker Compare Texts Instantly

Paste two texts and see differences highlighted instantly. Line-by-line comparison with additions, deletions, and changes clearly marked. Great for code review.

Compare Texts Free All Tools
No sign-up required to try • No files uploaded • Free forever

How It Works

1
Select or drop your file
2
Processed in your browser — nothing uploaded
3
Download the result — done!
Key Features

Why Use UniTrack Diff Checker

Spot differences between any two texts — code, documents, configs, and more.

100% Private

Your files never leave your device. Everything is processed locally in your browser.

Instant Processing

No waiting for server uploads. Processing starts immediately using your device's power.

Unlimited & Free

No file limits, no watermarks, no hidden fees. Use as much as you want, forever free.

Your Data Never Leaves Your Browser

Unlike other online tools, we don't upload your files to our servers. Everything is processed using JavaScript directly in your browser. When you close the tab, your data is gone. Zero tracking, zero risk.

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Server uploads
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Data stored
0
Tracking
FAQ

Frequently Asked Questions

Any plain text — code in any language, configuration files, documentation, contracts, or any document. The diff algorithm works on a line-by-line basis.

Added lines are highlighted in green, removed lines in red, and modified lines show both versions. The side-by-side view makes it easy to see exactly what changed.

Yes. All comparison happens in your browser. Your texts are never sent to any server — safe for comparing sensitive code or confidential documents.

Compare Texts for Free

Find differences between any two texts instantly — no upload, no signup.

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No sign-up required 100% browser-based Free forever