Text Diff Checker
Compare two text documents to see differences.
100% In-Browser • Zero Uploads
No Login Required
Diff Checker
Compare two texts to find differences.
About Text Diff Checker
Find differences between two pieces of text or code instantly. Helpful for reviewing changes, finding typos, or comparing versions.
100% Client-Side
Your files and data are processed locally in your browser memory. Never uploaded to remote servers.
Zero Login Required
Instant access with no account, no email sign-up, no passwords, and no subscription paywalls.
Instant Speed
Powered by modern WebAssembly and native web APIs for near-instant rendering and zero latency.
Privacy Guaranteed
Zero data retention, no user tracking cookies, and GDPR/HIPAA friendly. Your data remains strictly yours.
All Devices Ready
Fully responsive on desktop, tablet, and mobile devices without installing software or extensions.
How to Use
- Paste original text in the left panel.
- Paste the new/modified text in the right panel.
- Review the highlighted differences.
- Use side-by-side or inline view.