Diff Checker

A Diff Checker is a text comparison tool that analyzes two pieces of text and highlights the differences between them. It identifies additions (text present in the second version but not the first), deletions (text present in the first version but not the second), and unchanged content. Our tool uses advanced algorithms to provide accurate line-by-line and word-by-word comparisons.

You can compare any text-based content including code (JavaScript, Python, HTML, CSS, etc.), documents, articles, essays, configuration files, JSON, XML, and more. The Diff Checker works with any plain text input regardless of the programming language or document format.

Green highlighting indicates additions - text that exists in the new version but not in the original. Red highlighting indicates deletions - text that was in the original but removed in the new version. Gray or unmarked text represents unchanged content that appears in both versions.

Yes! Our Diff Checker is completely free with no registration required. You can compare unlimited text files without any restrictions. The tool works entirely in your browser, so your content is never sent to any server, ensuring complete privacy for sensitive code or documents.

Absolutely! The Diff Checker is perfect for code reviews, comparing different versions of code, reviewing pull requests, or tracking changes in configuration files. Developers, writers, and content editors all use this tool to quickly identify what has changed between two versions of any text.