Diff Checker
Compare two text files and highlight the differences.
The Fastest Way to Compare Text Blocks
Ever spent too much time manually looking for a small change between two versions of code or a document? Our Diff Checker is designed exactly for that. It highlights what was added in green and what was removed in red (strikethrough), giving you a clear visual representation of all modifications. You can toggle between character comparison for fine-grained changes, word comparison for standard text, or line comparison for large documents and code snippets. It's a must-have tool for developers, editors, and students alike.
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Frequently Asked Questions
Our tool compares the 'Original' text with the 'Modified' text. Any content existing only in the modified version is shown as green (added), and content existing only in the original is shown as red/strikethrough (removed).
Character mode compares every single letter and space. Word mode groups characters together into words for a more readable diff. Line mode highlights entire lines that have changed, which is ideal for comparing code files.
Yes, it's perfect for comparing source code, JSON files, or configuration blocks. We recommend using 'Lines' mode for the best results when comparing code.
No, all comparison is done locally in your browser using JavaScript. Your text never leaves your computer, ensuring complete privacy and security.