Text Difference Checker - Compare Documents with Similarity Score
Free online text difference checker to compare documents, check text differences, calculate similarity percentage, and get detailed change statistics.
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How to Use Text Difference Checker - Complete Guide
Input Your Documents
Add your original document on the left and the revised version on the right. The text difference checker supports various input methods:
Analyze Differences
The difference checker instantly highlights all changes and provides detailed statistics:
Review and Share Results
Use the comparison results for content review, editing, or collaboration:
Frequently Asked Questions
What is a text difference checker?
A text difference checker is a tool that compares two versions of text or documents and shows what has changed between them. It highlights additions in green, deletions in red, and provides detailed statistics about the changes. This is essential forcontent editors, writers, legal document review, manuscript comparison, and any situation where you need to track what was modified between document versions. Our tool provides a clear visual representation making it easy to review edits and changes.
How do I check the difference between two documents?
Simply paste your original document in the left panel and the revised version in the right panel. The difference checker will instantly analyze both texts and highlight all changes. Red highlighting shows what was removed, green shows what was added, and you'll see exactly where modifications occurred. The tool works with any text including articles, essays, legal documents, contracts, manuscripts, and more. You can also upload files for comparison.
What types of documents can I compare?
You can compare any text-based content including articles, blog posts, essays, research papers, legal documents, contracts,manuscripts, emails, scripts, product descriptions, marketing copy, and more. The difference checker works with plain text from any source. It's perfect for writers checking editorial changes, editors reviewing revisions, legal professionals comparing contract versions, students tracking essay edits, and content creators reviewing updates.
Can I see statistics about the changes?
Yes! Our text difference checker provides detailed change statistics including total number of additions, deletions, and modifications. You can see how many characters, words, or lines were changed, helping you quantify the extent of revisions. This is useful for tracking editorial changes, understanding document evolution, billing purposes for editing services, or simply knowing how much content was modified between versions.
Is this tool good for checking plagiarism?
Our text difference checker is designed to compare two specific documents and show changes between them, rather than checking against external sources for plagiarism. However, it's excellent for verifying if content was properly cited or modified, comparing your original work with submitted versions, or ensuring proper attribution when content is reused. For content analysis, also try our Word Frequency Counter.
Is my document data secure and private?
Absolutely! All text comparison happens locally in your browser using JavaScript. Your documents never leave your computer or get sent to any server. We don't collect, store, or transmit any of your content. You can use the tool offline once the page loads. This makes it completely safe for comparing confidential documents, proprietary content, unpublished manuscripts, legal contracts, or any sensitive material. Your privacy and document security are fully protected.
Is this text difference checker free?
Yes, 100% free with unlimited comparisons! No registration, downloads, or fees. Compare as many documents as you need with detailed statistics and highlighting. Perfect for writers, editors, students, legal professionals, and content creators. We also offer other free text tools like Text Diff Tool, Compare Text, and Character Counter.
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