TLS Version Checker
Check a TLS protocol version and determine whether it is considered current, deprecated or insecure.
What is TLS Version Checker?
Check a TLS protocol version and review its current security status. The tool compares common TLS versions, identifies deprecated or insecure protocols, and provides guidance on which versions should generally be used for modern HTTPS and secure network communication.
How to use
- Select or enter a TLS protocol version.
- Check its current security status.
- Review whether the protocol is current, deprecated or insecure.
- Compare the selected version with other TLS versions.
- Use the result when reviewing application or server configuration.
Features
- TLS version detection
- TLS 1.0 support information
- TLS 1.1 support information
- TLS 1.2 support information
- TLS 1.3 support information
- Deprecated version detection
- Security status
- Version comparison
Common Use Cases
- Reviewing HTTPS configuration
- Checking server TLS settings
- Security audits
- Application configuration
- TLS migration planning
Example
Hostname: example.com
TLS version: 1.1 Status: Deprecated Recommendation: Use TLS 1.2 or TLS 1.3
FAQ
Which TLS versions can the tool check?
The checker covers the commonly encountered TLS versions 1.0, 1.1, 1.2 and 1.3.
Which TLS versions should be used today?
TLS 1.2 and TLS 1.3 are the modern versions generally used for secure network communication, while older TLS versions should normally be disabled.
Is TLS 1.0 still secure?
TLS 1.0 is obsolete and should not be enabled for modern applications.
Is TLS 1.1 still supported?
TLS 1.1 is deprecated and should generally be disabled in modern applications and server configurations.
Can the tool test the TLS version of any website?
No. A browser-based tool cannot reliably inspect the TLS protocol version negotiated by an arbitrary HTTPS connection. This tool checks and compares TLS versions based on the version you provide.
Missing a feature?
If this tool doesn't cover your use case or is missing functionality, please let me know through the Contact page.
New improvements and features are added based on user feedback.