Get Protected Today
Auto-Protection scans pages as you browse, alerting you to false claims. Available now for Chrome; Firefox and Edge coming soon.
Note: Chrome may show an "Enhanced Safe Browsing" warning for newly published extensions. This is standard for all new extensions and will disappear as FactSentinel builds reputation with Google. We do not collect your browsing data.
How to Install
Get up and running in under 2 minutes
Install the Extension
Click the Chrome button above to install from the Chrome Web Store. Firefox and Edge builds will follow soon.
Create Your Account
Sign up for a free FactSentinel account. Choose Platform mode for instant access with 10 free fact-checks per month, or use your own OpenAI/Anthropic API keys for unlimited private fact-checking.
Start Browsing Safely
Auto-Protection scans pages automatically. For manual checks, select any text, right-click, and choose "Fact-Check with FactSentinel". You're now protected!
Prefer a Web App?
No extension needed. Use our web-based fact-checker to verify claims directly from your browser. Just paste the text and get instant results.
Try Web AppQuestions About Installation?
Check our help center for detailed installation guides and troubleshooting tips.