Online Free Tools to Scan Website Security

Observatory(Recommended)

https://observatory.mozilla.org/

SUCURI
https://www.anrdoezrs.net/links/8092889/type/dlg/https://sitecheck.sucuri.net/

Qualys

https://www.ssllabs.com/ssltest/

HostedScan Security

https://hostedscan.com/?utm_source=geekflare&utm_medium=toplist&utm_campaign=online-scan

Intruder

https://intruder.io/?utm_source=referral&utm_campaign=geekflare_online_scan_website_security_vulnerabilities

Quttera

http://www.quttera.com/

UpGuard

https://webscan.upguard.com/

Pentest-Tools

https://pentest-tools.com/website-vulnerability-scanning/website-scanner

ImmuniWeb

https://www.immuniweb.com/websec/