🔒 100% Client-Side
🔄 Text Diff Tool
Compare two texts and see differences highlighted
📄 Original Text
📝 Modified Text
Compare two texts and see differences highlighted
All text comparison happens in your browser. Your documents never leave your device.
No uploading or downloading. Compare text instantly in your browser.
Once loaded, works without internet connection.
No subscriptions, no hidden costs, completely free.
This text diff tool runs entirely in your browser using JavaScript. When you compare documents, the processing happens completely on your device. We never upload your text to any server, which means your documents, code files, contracts, and sensitive content remain completely private and secure.
Unlike online services that require document uploads, our client-side approach ensures zero data collection, zero server processing, and zero privacy concerns. Your text data never leaves your computer.
You can compare any type of text including plain text documents, code files, JSON data, configuration files, contracts, and more. The tool works with any text-based content and highlights character-level and line-level differences.
Differences are color-coded for easy identification: additions are highlighted in green, deletions in red, and unchanged text remains in the default color. This visual approach makes it easy to spot what changed between versions.
Since processing happens in your browser, the limit depends on your device's memory. The tool handles most documents efficiently, but extremely large files (100MB+) may slow down performance depending on your hardware.
Yes! This tool is completely free with no hidden costs or subscriptions. We believe privacy-first tools should be accessible to everyone.
We use Google Analytics to track page views for website improvement, but we never see, store, or collect your text data. All processing happens locally in your browser.