Text Diff Checker – Compare Two Texts & Find Differences
Enter text on both sides and click Compare.
Why use a private client-side text diff tool?
Reviewing revisions in legal contracts, NDA agreements, software source code, and configuration files requires comparing two blocks of text to locate exact modifications. Using public web diff tools that upload your text to cloud servers can leak confidential intellectual property, customer records, and trade secrets.
Zero Server Transmissions
Our Diff Checker compares texts line-by-line entirely within your local browser. Added lines are highlighted in green (+), deleted lines in red (-), and unchanged text in neutral gray, giving you immediate clarity without data exposure risks.
Frequently asked questions
Can I compare code files?
Yes. The diff algorithm handles JavaScript, Python, JSON, HTML, CSS, and plain text documents.
Is my text uploaded or stored?
Never. Everything is compared in local device memory.