Check the TLS protocol support of one or more web servers
Pass one or more hostnames with optional port to see a list of supported protocols that each server supports.
npx tls-check google.com https://bing.com vercel.com:443Checking TLS against 3 website(s)...
✅ google.com TLSv1 Enabled.
✅ google.com TLSv1.1 Enabled.
✅ google.com TLSv1.2 Enabled.
✅ google.com TLSv1.3 Enabled.
✅ bing.com TLSv1 Enabled.
✅ bing.com TLSv1.1 Enabled.
✅ bing.com TLSv1.2 Enabled.
❌ bing.com TLSv1.3 Disabled.
❌ vercel.com TLSv1 Disabled.
❌ vercel.com TLSv1.1 Disabled.
✅ vercel.com TLSv1.2 Enabled.
✅ vercel.com TLSv1.3 Enabled.- TLS 1.3 Browser Support - Can I Use
- Deprecating TLS 1.0 & 1.1 - DigitCert
- It's Time to Disable TLS 1.0 - GlobalSign