~/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 111 more days.
── output ─────
Issued to
*.lidl.de
Issued by
SwissSign RSA TLS OV ICA 2022 - 1
Valid from
2025-08-11
Valid until
2026-08-11 (111 days)
TLS version
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384
Key
RSA · 2048 bit
Signature
sha256WithRSAEncryption
Forward secrecy
yes
Self-signed
no
Must-staple
no
SHA-256 fingerprint
32:FA:9A:69:94:1C:F4:8C:A4:0B:90:42:32:A0:18:43:C0:EB:BB:7F:E1:C9:1E:4D:CA:94:1D:8E:1E:7D:53:22
Serial
4856834A3EF866B4B8AE482944C192F334E5F35D
subject_alt_names · 2
*.lidl.de lidl.de
certificate_chain · 4 certs
[ leaf ]*.lidl.de
111 days left
issuer: SwissSign RSA TLS OV ICA 2022 - 1
2025-08-11 → 2026-08-11
[ inter ]SwissSign RSA TLS OV ICA 2022 - 1
3721 days left
issuer: SwissSign RSA TLS Root CA 2022 - 1
2022-06-29 → 2036-06-29
[ inter ]SwissSign RSA TLS Root CA 2022 - 1
3806 days left
issuer: SwissSign Gold CA - G2
2022-06-28 → 2036-09-22
[ root ]SwissSign Gold CA - G2
3839 days left
issuer: SwissSign Gold CA - G2
2006-10-25 → 2036-10-25
// Save lidl.de → we'll run this daily and alert on changes. /signup →