HSTS Checker Tool
Comprehensive HTTP Strict Transport Security analysis and security assessment
HSTS Detection
Security Analysis
Fast Check
What is HSTS?
HTTP Strict Transport Security (HSTS) is a web security policy that helps protect websites against protocol downgrade attacks and cookie hijacking by forcing browsers to use HTTPS connections.
HTTP Strict Transport Security Test
Enter a domain name to test HTTP Strict Transport Security configuration and analyze security headers.
Tool Features
Comprehensive HSTS and security header analysis with recommendations
HSTS Detection
Check if HTTP Strict Transport Security is properly configured
Security Analysis
Comprehensive security header analysis and validation
Configuration Validation
Validate HSTS parameters and detect configuration issues
Security Score
Get an overall security score with improvement recommendations