Compare two texts and highlight differences — word-level diff
Our free text diff checker lets you compare two blocks of text and see exactly what changed. Whether you're reviewing document revisions, checking code changes, comparing drafts, or verifying data accuracy, the diff tool highlights additions (green), deletions (red), and unchanged text in real time. All processing happens in your browser — your text never leaves your device.
The diff algorithm works at the word level, making it perfect for natural language comparison, code review, plagiarism checking, and version control. Unlike server-based diff tools that require uploads, our tool respects your privacy completely. Paste two versions and instantly see every change.