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Websites, HTTP, HTML, PHP, and related services
Test websites to detect issues, security settings, etc - Web Based Tools
Updated August 30 2024
Security Headers
https://securityheaders.com/
Scan websites for issues/malware with urlscan.io
https://urlscan.io/
SSL/TLS Website Testing
https://www.ssllabs.com/ssltest/
https://www.sslchecker.com/
https://pentest-tools.com/network-vulnerability-scanning/ssl-tls-scanner
Test Bad SSL/TLS Certs using badssl.com
https://badssl.com/
https://www.sslchecker.com/
DigiCert SSL Installation Diagnostics Tool
https://www.digicert.com/help/
https://www.wormly.com/test_ssl
Check the OCSP Stapling of TLS Certificates:
https://certificatetools.com/ocsp-checker
HTTP, HTTPS, Email
https://internet.nl/
Test if websites are working properly
https://downdetector.com/
https://downforeveryoneorjustme.com/
https://validator.w3.org/
https://www.browserling.com/
https://mxtoolbox.com/SuperTool.aspx
Check if DNS for your site has replicated properly
https://www.whatsmydns.net/
https://urlscan.io/
Thinkst Canary offers this Canary Generator which can alert you when something happens, such as a URL being visited, or a special email address receiving an email.
https://canarytokens.org/generate
Search Keywords: Alert, Monitoring, Monitored, Warning, Siren
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