https://shaaaaaaaaaaaaa.com/
SHAAAAAAAAAAAAA | Check your site for weak SHA-1 certificates.
(Retired.) Check a site to see if it's still using dangerously weak SHA-1 certificates. Open source tool by @konklone.
check your siteweakshacertificates
https://clickjacktest.com/
ClickJack Test -- Check Your Site for Clickjacking Vulnerabilities
Free tool that checks whether a website has proper clickjacking defenses. Tests X-Frame-Options and CSP frame-ancestors headers in seconds.
check your sitetestclickjackingvulnerabilities
https://www.loonstudio.digital/
Website Safety Scan - Check Your Site's Trust Score
Analyze how safe and trustworthy your website feels to new visitors. Get an AI-powered safety score and actionable insights in minutes.
check your sitesafety scantrustscore
https://docs.masteriyo.com/faqs/how-to-check-your-sites-php-and-wp-versions
How to check your site's PHP and WordPress versions? – Masteriyo Docs
how to check
https://blockedinchinaplugin.com/
Blocked in China – Check Your WordPress Site's Availability in Mainland China
The Blocked in China WordPress plugin checks whether your website is reachable from mainland China — tested from 5 real regions, on a monthly, weekly, daily,...
blocked in chinawordpress sitecheck