Text Diff Checker
Compare two text documents side-by-side and instantly see what's changed. Our diff checker highlights additions in green and deletions in red, making it perfect for reviewing document edits, code changes, or comparing different versions of content. See a summary of total changes at a glance.
How to Use
- Paste your original text into the left text area
- Paste the modified version into the right text area
- Click "Compare" to see the differences highlighted
- Green highlighting shows added text, red shows deleted text
- The summary at the top shows total additions, deletions, and unchanged portions
Frequently Asked Questions
What is a diff tool?
A diff (difference) tool compares two pieces of text and shows what has changed between them. It highlights additions, deletions, and modifications, making it easy to review edits without manually scanning both documents.
When should I use a text diff checker?
Use a diff checker when reviewing document revisions, comparing code versions, checking edited articles, verifying contract changes, or any time you need to see exactly what changed between two versions of text.
How does the diff algorithm work?
We use the industry-standard diff-match-patch algorithm, which intelligently compares texts character by character and word by word to find the minimal set of changes. It's the same technology used in version control systems like Git.
Can I compare code or formatted text?
Yes! This tool works with any plain text, including code, markdown, CSV data, logs, or formatted documents. While it shows changes in the text itself, it treats all content as plain text regardless of programming language or format.