How do I compare two text files online?

Simply paste your original text in the left panel and the modified text in the right panel, or upload files directly. The diff tool will instantly highlight all differences with color coding: green for additions, red for deletions, and yellow for modifications.

What is the difference between split view and unified view?

Split view shows the original and modified texts side-by-side in separate panels, making it easy to compare corresponding lines. Unified view shows all changes in a single column with additions and deletions marked inline, similar to Git diff output. Choose based on your preference.

Can I export the diff as a patch file?

Yes, you can export the comparison results as a standard patch file (.patch or .diff format). This patch file can be used with Git or other version control systems to apply the changes programmatically using commands like 'git apply' or 'patch'.

What types of files can I compare?

This diff tool works with any plain text content including source code (JavaScript, Python, Java, etc.), configuration files (JSON, YAML, XML), documentation (Markdown, plain text), and more. It performs text-based comparison regardless of the file extension.

Is this diff tool suitable for code review?

Absolutely! The tool provides syntax highlighting and line-by-line comparison perfect for reviewing code changes. You can easily spot additions, deletions, and modifications in pull requests, commits, or when comparing different versions of your codebase.

How does the line-by-line comparison work?

The tool uses a sophisticated diff algorithm to match lines between the two texts. It identifies which lines were added, removed, or changed, and displays them with color coding. Within modified lines, it can also highlight the specific characters that changed.

Is my data secure when using this online diff tool?

Yes, all text comparison happens entirely in your browser. Your data is never uploaded to any server. This client-side processing ensures your code, documents, and sensitive information remain completely private and secure.

diff

Text Diff Tool - Compare Text Online

Compare two texts or files side-by-side with line-by-line diff highlighting. See additions, deletions, and changes instantly. Split or unified view, export as patch file. Perfect for code review and document comparison.

Hide unchanged

OriginalUpload file

ModifiedUpload file

Features

Visual Comparison

Side-by-side split view
Unified diff view
Color-coded changes
Line number display
Inline character highlighting

Input Options

Paste text directly
Upload files
Drag and drop support
Any text format
Large file support

Output & Export

Export as patch file
Copy diff to clipboard
Standard diff format
Git-compatible output
Share results

How to Use This Tool

Add Original Text

Paste your original text in the left panel or upload a file

Add Modified Text

Paste the modified version in the right panel or upload another file

Review Differences

View highlighted changes, switch views, and export as patch if needed

Common Use Cases

For Developers

- Code review and pull request comparison
- Comparing configuration file versions
- Debugging by comparing expected vs actual output
- Reviewing merge conflict resolutions

For Everyone

- Comparing document revisions
- Tracking changes between text versions
- Verifying data transformations
- Proofreading and editing assistance

Frequently Asked Questions

A text diff tool compares two pieces of text or files and highlights the differences between them. It shows additions (new lines), deletions (removed lines), and modifications. This is essential for code review, document versioning, and tracking changes in configuration files.

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