SSL Certificate Checker for Website Security and Certificate Expiry
Check a website’s SSL certificate online to review HTTPS status, certificate validity, issuer, hostname coverage, certificate chain, and expiry details. Use this SSL checker to verify a website's SSL certificate, identify certificate issues, and check whether a public domain is using a valid HTTPS certificate.
One Host
Public HTTPS · port 443
Expiry
Date + days remaining
Host + Chain
Name match + chain status
Review Website SSL Certificates for Validity, Expiry and HTTPS Issues
Use the SSL Certificate Checker to check a website's SSL certificate, verify HTTPS status, review certificate expiry, and identify hostname or certificate-chain issues during technical SEO reviews, website launches, and migrations.
Check Validity Dates and Expiry
Check an SSL certificate's expiry, its valid-from date, and days remaining. Use your selected warning window to identify certificates approaching expiry.
Identify the Certificate Issuer
See the issuer recorded in the certificate the server returns. Keep these details with your deployment records when investigating certificate changes.
Check Domain and Subdomain Coverage
Compare the exact hostname entered with the certificate’s Subject Alternative Names (SANs). Review any reported mismatch before relying on the certificate for that host.
Review Chain Status and TLS Hints
Review available chain-status findings and detected TLS-version information when enabled. Investigate reported validation problems without treating the result as a complete website security assessment.
Check SSL Certificates Before HTTPS Issues Affect Website Trust
SSL does not guarantee search rankings, but an expired, invalid, or hostname-mismatched certificate can create HTTPS trust problems. Use Wranker’s SSL Certificate Checker to verify a website's SSL certificate, review expiry details, and prepare certificate findings for technical SEO and website maintenance workflows.
Check Website SSL Certificate Status
Check whether the public SSL certificate is valid, whether the hostname matches, and whether the available certificate details indicate a possible HTTPS trust issue.
Check SSL Certificate Expiry
Review the certificate expiry date and flag certificates approaching the selected 7, 14, 30, or 60-day warning threshold. Use the result to plan certificate renewal before the certificate expires.
Review SSL Certificate Details for Technical Audits
Review certificate issuer, validity dates, hostname coverage, chain status, and basic TLS hints for reporting and developer review. Use these findings alongside broader technical SEO checks when needed.
How to Check and Verify a Website SSL Certificate in Four Steps
Enter a public domain or URL, configure the SSL certificate test settings, run the check, and review the certificate results. Use this workflow to check HTTPS status, verify certificate details, and identify expiry or hostname issues.
Enter a Website Domain or URL
Enter a public domain, subdomain, or full HTTPS URL such as example.com, www.example.com, or https://example.com. Wranker extracts the hostname to check the website’s SSL certificate.
Choose SSL Certificate Check Settings
Choose whether to review the certificate chain, show HTTPS and TLS hints, set an expiry warning threshold, and check the exact hostname or subdomain entered.
Configure Advanced SSL Check Options
Use the standard HTTPS port 443, adjust the connection timeout when needed, and enable Server Name Indication for shared hosting or environments with multiple certificates on one IP address.
Run the SSL Check and Review Results
Run the SSL Certificate Checker to review certificate validity, issuer, expiry date, hostname match, certificate-chain status, and available TLS hints. Use the results to verify an SSL certificate online and identify issues that need further review.
Check Website SSL Certificates Across Launch, Audit and Migration Workflows
Use the SSL Certificate Checker for quick public checks of a domain or URL. Review certificate validity, HTTPS status, hostname coverage, expiry dates, and certificate-chain details during website launches, technical SEO audits, and migrations. Dashboard workflows can support additional monitoring and bulk-check needs where available.
Use the SSL Certificate Checker to check a website's SSL certificate, verify HTTPS status, review hostname coverage, and check certificate expiry before a website launch, technical SEO audit, migration, or major update.
Technical SEO Teams
Investigate certificate-related access problems during a technical audit. Review the tested hostname’s findings separately from page responses, crawl restrictions, and indexing checks.
SEO Agencies
Record the checked hostname, test date, and relevant findings in client audit notes. Identify unresolved checks so clients can distinguish confirmed problems from missing evidence.
Website Owners and Founders
Check your website’s SSL certificate on the live hostname before sending campaign traffic. Ask your hosting provider to investigate reported problems before promotion.
Developers and Enterprise Teams
After renewal, DNS, hosting, or CDN changes, test the SSL certificate presented for the affected public hostname. Review what is served, not just the installation confirmation.
Continue Your HTTPS and Technical SEO Review
After using Wranker’s SSL certificate checker, choose a focused tool to inspect page resources, response headers, DNS records, or page-level SEO.
HTTPS RESOURCES
Mixed Content Scanner
Scan a public domain’s HTTPS pages for HTTP resource references. Locate images, scripts, and stylesheets that need review within your selected scan scope.
OpenRESPONSE HEADERS
HTTP Header Checker
Inspect a URL’s status, redirect path, and security response headers, including HSTS. Review what the server sends after an HTTPS connection is established.
OpenHOSTNAME RESOLUTION
DNS Lookup Checker
Check public address and alias records for a domain or subdomain. Review the returned values when a certificate check reaches an unexpected server.
OpenPAGE-LEVEL SEO
Website SEO Analyzer
Review metadata, headings, links, and indexing instructions on one URL. Examine the page’s SEO implementation beyond its certificate, without starting a full website crawl.
SSL Certificate Checker Questions and Answers
Find clear answers about SSL certificate validity, HTTPS status, expiry dates, hostname mismatches, certificate chains, online SSL checks, and public checker limits.
An SSL Certificate Checker is a tool that reviews the public SSL/TLS certificate associated with a domain or hostname. It can show certificate validity, expiry date, issuer, hostname coverage, certificate-chain status, and other available TLS details.
Enter the website domain, subdomain, or full HTTPS URL into an SSL Certificate Checker. Run the check and review the certificate status, expiry date, issuer, hostname match, and certificate-chain information.
Yes, some tools provide free public SSL checks. Wranker’s public SSL Certificate Checker can be used for quick domain or URL checks, although public usage limits may apply.
To verify a website SSL certificate, check whether the certificate is valid, whether it has expired, and whether its hostname matches the domain being checked. You should also review the issuer and available certificate-chain details.
Enter the website hostname into an SSL checker online and review the certificate’s expiry date. Some tools also allow you to set a warning threshold for certificates that will expire within a selected number of days.
A hostname mismatch means the certificate does not cover the exact domain or subdomain being checked. The hostname may not be included in the certificate’s Common Name or Subject Alternative Names.
An SSL certificate chain check reviews the connection between the website certificate and the available intermediate or root certificates. An incomplete or incorrect chain may cause trust problems for some clients or browsers.
An SSL checker mainly reviews certificate and HTTPS-related details such as validity, expiry, issuer, hostname coverage, and certificate-chain status. An SSL vulnerability scanner performs a broader security assessment and may test for protocol, cipher, or configuration weaknesses.
An SSL certificate does not guarantee higher Google rankings. HTTPS is one aspect of Google’s broader page experience guidance, but ranking also depends on relevance, content quality, usability, and many other signals.
Check your SSL certificate during website launches, migrations, hosting or CDN changes, and major releases. It is also useful to review certificate expiry regularly so renewal can be planned before the certificate expires.
Check SSL health before trust issues reach users.
Use the SSL Certificate Checker for a focused HTTPS trust review, then connect it with mixed content scans, HTTP header checks, DNS troubleshooting and project-level reporting inside Wranker.
Need saved SSL checks, exports, project history and broader technical SEO workflows? Start free and continue inside the dashboard.