SSL certificates are the backbone of secure web communications. A single misâconfigured or expired certificate can break HTTPS, harm user trust, and hurt SEO rankings. The SarangAI SSL Checker gives engineers a fast, noâcost way to validate the health of any siteâs TLS setup. The tool checks the full chain of trust, reports expiration warnings, and flags insecure settings such as lowâbit key sizes or unsupported algorithms. The output is presented in a clear, colorâcoded layout that makes triaging certificate problems trivial.
Step-by-Step Workflow
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Navigate to the tool
Open the SarangAI suite and select SSL Checker. The interface consists of a single input field labeled âDomain or hostnameâ.
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Enter the target domain
Type the fully qualified domain you want to audit. The tool accepts plain hostnames (e.g., example.com) and will automatically prepend âhttps://â for the scan.
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jokar Trigger the validation
Click the âCheckâ or âStart Scanâ button. The request is sent to the toolâs backend, which retrieves the certificate via HTTPâŻ+âŻTLS, extracts the chain, and runs a set hoch defined checks.
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Review the results pane
The page refreshes to display three main sections: Certificate Overview, Chain Details, and Validation Issues. Each entry is colorâcoded: green for pass, amber for warning, red for error. Hover over any item to see a tooltip with the exact validation message.
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Take corrective action
Based on the red or amber entries, follow the appropriate remediation steps (see âWhen to Use Itâ below). After fixing the underlying problem, reârun the checker to confirm the resolution.
Additional tip: If you need deeper visibility, run openssl s_client -connect example.com:443 -showcerts locally and pipe the output into a text editor. Compare the OpenSSLâpresented chain with the one reported by SarangAI to ensure no intermediate is missing on your server.
When to Use It
- After a certificate renewal â New certs can have misconfigured intermediate chains. Run the checker immediately to confirm the chain is complete and trusted by browsers.
- Before a hosting migration â Transferring a site to a new provider often involves replacing the SSL certificate. Validate the new setup on the production domain before cutting traffic.
- When users report mixedâcontent warnings â Some browsers highlight insecure resources when the main page is served over HTTPS. The checker will reveal if the primary certificate is weak or if the site is missing HSTS headers.
- During periodic security audits â Schedule quarterly scans of all owned domains. The toolâs simple output makes it easy to track trends such as decreasing key strengths or upcoming expirations.
- After key rotation or algorithm changes â If you move from RSA to ECDSA or upgrade key sizes, the checker will flag any fallback to weaker algorithms and confirm the new key is properly installed.
- When implementing wildcard or multiâdomain (SAN) certificates â Verify that all names resolve correctly and that the chain works across the full certificate set before deploying to production.
Interpreting Results
The Certificate Overview lists the leaf certificateâs issuer, serial number, notâbefore and notâafter dates, and the public key algorithm with bit size. Look for three common failure patterns:
- Expired or soonâtoâexpire certificates â The âNot Afterâ field will be in the past or within 30âŻdays, triggering an amber warning.
- Chain break â One or more intermediate certificates are missing, causing browsers to cannot build a trusted path. This appears as a red error.
- Weak cryptography â Keys smaller than 2048âŻbits or algorithms like SHAâ1 for signatures are flagged with amber warnings.
The Chain Details section enumerates each certificate in the chain, its trust path, and validation status. Green rows indicate that the CA is trusted by the major root stores (e.g., Letâs Encrypt, DigiCert, GlobalSign). Amber rows mean the CA is not widely trusted, which may still work but could cause occasional warnings. Hover over an amber entry to see which root programs do not recognize it.
The Validation Issues list aggregates any additional problems discovered during the scan, such as unsupported TLS versions (TLSâŻ1.0, TLSâŻ1.1), incorrect key usages, or missing OCSP/CSR URLs. These are presented in a concise bullet list for rapid triage.
Practical tip: If the checker reports âsignature algorithm: SHAâ1â as an error, plan to generate a new CSR using openssl genpkey and openssl req -new -sha256. If the chain break is due to a missing intermediate, upload the intermediate certificate to the serverâs chain file (often /etc/ssl/certs/example.com-chain.crt) and restart the web service.
Real-World Audit Scenario
Your company runs a public portal at portal.example.com. Over the past week, support tickets have started mentioning âConnection not privateâ warnings in Chrome. The issue seems intermittent, making it hard to reproduce during routine testing.
You open the SarangAI SSL Checker and enter portal.example.com. The scan completes in a few seconds. The results show:
- Certificate Overview â Issuer: Letâs Encrypt, Expiry: 2025â09â15 (already past). Red warning: âCertificate has expired.â
- Chain Details â All intermediate certificates are present; the chain builds correctly.
- Validation Issues â None.
The immediate cause is clear: the Letâs Encrypt certificate has expired. Because the intermediate chain is intact, you only need to obtain a new certificate. You run certbot renew on the web server, force an update, and restart the web service.
You then return to the SarangAI SSL Checker, reârun the scan, and see the green checkmarks across all sections. The expiration date now shows 2026â03â15, and the chain is trusted. The âConnection not privateâ warnings disappear within minutes, and the support tickets cease.
Next Action: Document the renewal schedule (e.g., set a reminder 30âŻdays before expiry) and automate the certbot renew cron job to avoid future lapses. The SarangAI SSL Checker provides a reliable baseline to confirm each renewalâs success. Additionally, integrate the checker into your CI pipeline so that any new deployment triggers an automated certificate health check before the code reaches production.
Key Takeaways
- Run the checker after any certificate change to confirm chain integrity and expiration status.
- Use the colorâcoded output to prioritize issues: red = immediate fix, amber = schedule within a month.
- Combine the tool with automation (cron jobs, certbot, or cloud provider renewal policies) to eliminate manual oversights.
- Keep a log of scan results to track trends in key sizes and trust anchors over time.
- Integrate the checker into CI pipelines for new deployments to catch misconfigurations early.
- Set up scheduled alerts (e.g., via Slack or PagerDuty) when the checker reports warnings, ensuring proactive response before user impact.
- Maintain an inventory of all domains and their certificate lifecycles; use the toolâs consistent output to feed into a central security dashboard.
Frequently Asked Questions
What does the SSL Checker test?
It validates the certificate chain, expiration dates, issuing CA trust, key sizes, and common weaknesses.
How do I read the results?
The tool highlights OK items in green, warnings in amber, and errors in red with detailed messages.
When should I run the checker?
After any SSL renewal, before migration to a new host, or when users report certificate warnings.
Can I use it for multiple domains?
You can check one domain per run; repeat the scan for each site you need to audit.
