TLS Checker
Check TLS versions and cipher support for any domain. Confirm you're on TLS 1.2 and 1.3 and free of deprecated ciphers.
Modern browsers, PCI DSS and every major compliance framework require TLS 1.2 or 1.3 with strong ciphers. Anything older exposes users to downgrade and cipher-suite attacks that undermine your entire security story. This tool negotiates against your server and reports exactly which protocols and cipher families are enabled.
TLS Checker evaluates the following signals from your target host:
Frequently asked questions
- We flag them if detected. Neither should be enabled in 2026.
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