TLS Version Comparator
Compare TLS versions side-by-side. Understand the differences, security implications, and when to use each version.
TLS 1.3
Released: 2018
Security
Excellent
Performance
Excellent
Browser Support
Excellent (2018+)
Key Features
- 1-RTT handshake (0-RTT optional)
- Perfect Forward Secrecy mandatory
- AEAD ciphers only
- Removed insecure features
- Improved security
TLS 1.2
Released: 2008
Security
Good (with proper config)
Performance
Good
Browser Support
Universal
Key Features
- 2-RTT handshake
- Forward Secrecy optional
- AEAD and legacy ciphers
- More flexible
- Mature and stable
TLS 1.1
Released: 2006
Security
Poor
Performance
Fair
Browser Support
Deprecated
Key Features
- 2-RTT handshake
- Legacy ciphers
- Vulnerable to attacks
- No longer recommended
TLS 1.0
Released: 1999
Security
Very Poor
Performance
Fair
Browser Support
Deprecated
Key Features
- 2-RTT handshake
- Very old ciphers
- Known vulnerabilities
- Should not be used
Recommendations
- ✓Use TLS 1.3 for new deployments - it offers the best security and performance.
- ✓Support TLS 1.2 for compatibility with older clients.
- ✗Disable TLS 1.0 and 1.1 - they are deprecated and insecure.