~/tools / ssl-checker
SSL Checker
Check SSL certificate expiry, chain validity, TLS version and cipher. Catches expired certs, weak crypto and chain issues.
[ OK ]
Valid for 61 more days.
── output ─────
- Issued to
- gmail.com
- Issued by
- WR2
- Valid from
- 2026-03-30
- Valid until
- 2026-06-22 (61 days)
- TLS version
- TLSv1.3
- Cipher
- TLS_AES_256_GCM_SHA384
- Key
- EC (prime256v1) · 256 bit
- Signature
- sha256WithRSAEncryption
- Forward secrecy
- yes
- Self-signed
- no
- Must-staple
- no
- SHA-256 fingerprint
- F0:46:C5:75:99:A6:87:F2:1A:14:4B:F5:61:2C:3B:7D:5C:97:2D:87:41:0D:97:F2:2A:F5:EA:C4:5E:2B:BB:9C
- Serial
- 91D00E36DF448DF41079231C72ED31E6
subject_alt_names · 2
gmail.com
*.gmail.com
certificate_chain · 3 certs
[ leaf ]gmail.com
61 days left
issuer: WR2
2026-03-30 → 2026-06-22
[ inter ]WR2
1035 days left
issuer: GTS Root R1
2023-12-13 → 2029-02-20
[ inter ]GTS Root R1
646 days left
issuer: GlobalSign Root CA
2020-06-19 → 2028-01-28