Compare Two Texts Online – Free Visual Diff Tool

Private & Secure Text Comparison

This visual diff tool works entirely in your browser. No uploads, no login, and no tracking. Your data never leaves your device, making it a secure and reliable text comparison tool.

How the Text Difference Checker Works

The tool compares two texts line by line and highlights added, removed, and modified content. It functions similarly to common diff utilities used in version control systems like Git.

You can compare source code, configuration files, JSON data, documents, or any structured text instantly. The tool supports both side-by-side and unified diff views for maximum flexibility.

Features

• Line-by-line comparison – Accurate diff algorithm for precise results
• Whitespace handling – Option to ignore trailing spaces and tabs
• Case sensitivity – Toggle case-insensitive comparisons
• Multiple view modes – Split view or unified diff display
• 100% client-side – Your data never leaves your browser

Common Use Cases

• Compare two text files online without uploading
• Highlight differences between documents and documents
• Code diff viewer for developers and programmers
• Compare JSON files and configuration files side by side
• Git diff alternative without command line installation
• Check code changes before committing to version control
• Review document edits and revisions

Frequently Asked Questions

How do I compare two text files online?

Paste or upload content into both text fields, select your comparison options, and click "Compare Texts". Differences will be highlighted instantly with line-by-line accuracy.

Is this text diff tool private and secure?

Yes, absolutely. This is a 100% client-side text comparison tool. No data is sent to any server, uploaded, or stored anywhere. Your information remains completely private.

Can I compare source code with this tool?

Yes. This tool is perfect for comparing code, including JavaScript, Python, PHP, and any other programming language. It also works for configuration files, JSON, XML, and structured text.

What's the difference between split view and unified view?

Split view shows both texts side by side with color-coded differences. Unified view shows a traditional diff format with added lines prefixed with "+" and removed lines with "-".

Can I ignore whitespace differences?

Yes. Enable "Ignore whitespace" to treat lines with different indentation or spacing as identical, which is useful when comparing code with different formatting.

Is there a file size limit?

The tool works in your browser, so limits depend on your device's available memory. Most modern devices can handle text comparisons up to several MB without issues.