website
Website Speed Test
Run a Lighthouse-powered speed test: performance score plus Core Web Vitals (LCP, FCP, CLS, TBT).
Open tool →Security Header Checker
Security Header Checker helps you work faster without installing software. Enter a URL or configuration and review security header checker results with exportable details. Results are processed in your browser or via secure APIs where noted, with clear output you can copy or download.
Input
About this tool
Security Header Checker checks live URLs for performance, security, DNS, and metadata issues.
FAQ
Related tools
website
Website Uptime Checker
Website Uptime Checker checks live URLs for performance, security, DNS, and metadata issues.
Open tool →website
Website Size Checker
Website Size Checker checks live URLs for performance, security, DNS, and metadata issues.
Open tool →website
Redirect Checker
Redirect Checker checks live URLs for performance, security, DNS, and metadata issues.
Open tool →website
SSL Checker
SSL Checker checks live URLs for performance, security, DNS, and metadata issues.
Open tool →website
DNS Lookup
DNS Lookup checks live URLs for performance, security, DNS, and metadata issues.
Open tool →