SSL Certificate Expiry Check
Check SSL certificate expiry for a domain.
▶Về công cụ này
This tool checks SSL certificate expiry in one click. Three features: 1) Enter domain to display expiry, 2) View certificate info, 3) Useful for planning renewal. Ideal for preparing before expiry.
Giao diện công cụ
Nhấp "Kiểm tra trên SSL Labs" để mở báo cáo Qualys SSL Labs trong tab mới. Bạn có thể kiểm tra tính hợp lệ và đánh giá chứng chỉ.
Cách sử dụng
- Enter domain name (example.com)
- Click Check
- Certificate expiry and certificate info are displayed
Khi nào nên dùng
Verify cert expiry, plan renewal.
Ví dụ
example.com → Expires: March 15, 2025
Câu hỏi thường gặp
SSL cert validity?
Many certs: 1 year. Let's Encrypt: 90 days. Renew before expiry.
Check fails?
CORS or firewall may block external API. Check directly in browser.
How to check SSL expiry?
Enter domain, click Check. Certificate expiry shown instantly.
SSL cert expiry guideline?
Commercial 1–2 years. Let's Encrypt 90 days, auto-renew common. 30+ days left = safe.
Expired SSL cert?
Browser shows warning, users hesitate. Bad for SEO. Renew early.
When to renew SSL?
30 days before expiry. Let's Encrypt auto-renews. Set reminder for manual.
SSL vs TLS?
SSL is legacy name, TLS is current. TLS 1.2/1.3 recommended. Certs work for both.
Wildcard cert expiry?
Same as regular. Covers *.example.com. Has expiry like any cert.
SSL cert revocation?
Can be revoked before expiry (e.g. key leak). Revoked = browser warning.
How to use SSL check tool?
Enter domain (example.com), click Check. Expiry and cert info displayed.