SSL Certificate Checker validity & expiry
Check whether a public domain or URL has a valid SSL/TLS certificate. Review HTTPS trust status, certificate expiry, issuer, hostname coverage, certificate chain validity and basic TLS security hints before users or browsers run into trust issues.
Port 443
Checks standard public HTTPS
7–60 days
Configurable expiry warning window
Chain + host
Trust path and hostname coverage
Review the HTTPS signals that protect user confidence
Use the SSL Certificate Checker to inspect the public certificate for a hostname and spot the issues that commonly affect technical SEO QA, launches and migrations.
Use it during internal linking audits, content optimisation, technical SEO reviews, website migrations and content hub planning.
SSL validity and expiry risk
Confirm whether the certificate is valid, whether it has expired and how many days remain before the selected warning threshold is reached.
Issuer and validity window
Review the issuing certificate authority, valid-from date, expiry date and structured certificate details needed for audit documentation.
Hostname match and SAN review
Check whether the exact domain or subdomain is covered by the certificate common name or subject alternative names.
Certificate chain and TLS hints
Review chain status, intermediate/root certificate context and public-safe TLS guidance without turning the tool into a vulnerability scanner.
HTTPS issues can break trust before SEO gets a chance
SSL does not guarantee rankings, but expired, invalid or misconfigured certificates can create browser warnings, damage user confidence and complicate technical SEO QA. Wranker keeps the check focused, practical and export-ready.
Confirm HTTPS trust
Check whether the public certificate is valid and trusted so users, browsers and search crawlers can access the site cleanly over HTTPS.
Prevent renewal surprises
Flag certificates expiring within 7, 14, 30 or 60 days and give teams time to renew before warnings appear.
Support audit handoff
Prepare clean SSL results for reporting, developer QA and technical SEO workflows that also include mixed content, headers and DNS checks.
From hostname to SSL review in four calm steps
Keep the public workflow focused: enter one domain, choose check settings, run the SSL check and review the output in a dashboard-style report.
Enter a domain or URL
Add one public hostname such as example.com, www.example.com or a full HTTPS URL. Wranker extracts the hostname for the SSL check.
Choose check settings
Include the certificate chain, show protocol hints, set the expiry warning threshold and check the exact subdomain you entered.
Use advanced options
Keep the public check on standard HTTPS port 443, adjust the timeout and use Server Name Indication when needed for hosted certificates.
Run and review output
Run the SSL check to open the dashboard-style output with status, issuer, expiry, hostname match, chain status and recommendations.
Run SSL checks across launch, audit and migration workflows
The public checker is useful for fast one-domain checks. Dashboard workflows can support saved history, bulk checks and recurring monitoring where needed.
Technical SEO teams
Review SSL trust, expiry and chain details during technical audits, migrations and post-deployment QA.
SEO agencies
Include SSL status, expiry risks and chain notes in technical SEO reports before handing fixes to clients or developers.
Website owners and founders
Check HTTPS status before launches, campaigns and major site updates so visitors do not encounter browser warnings.
Developers and enterprise teams
Confirm certificate deployment after DNS, CDN, hosting or release changes and re-check exact subdomains before go-live.
Pair SSL checks with the rest of your technical SEO stack
SSL is one important part of HTTPS quality. Use related Wranker tools to check mixed content, security headers, DNS and broader technical SEO health.
Mixed Content Scanner
Find HTTP assets that load on HTTPS pages after SSL setup or migrations.
OpenHTTP Header Checker
Review HSTS and other HTTP security headers that support a cleaner HTTPS setup.
OpenDNS Lookup Checker
Review DNS records and hostname resolution when SSL connections fail or route unexpectedly.
OpenTechnical SEO Audit Tool
Connect SSL checks with broader crawlability, indexability and technical SEO QA workflows.
Questions about SSL certificate checks
Answers to common questions about SSL status, expiry warnings, hostname mismatches, certificate chains and public checker limits.
An SSL Certificate Checker is a tool that checks whether a domain or URL has a valid SSL/TLS certificate. It can show certificate status, expiry date, issuer, hostname match and certificate chain details.
An SSL/TLS certificate enables encrypted HTTPS connections between a browser and a website. It helps visitors confirm they are connecting to the intended website securely.
Yes. The tool shows the certificate expiry date and calculates how many days remain before expiry.
Expiring soon means the certificate is still valid but will expire within the selected warning threshold, such as 7, 14, 30 or 60 days.
If a certificate expires, visitors may see browser security warnings, and users may lose trust in the website until the certificate is renewed.
A hostname mismatch happens when the SSL certificate does not cover the domain or subdomain being checked. For example, a certificate for example.com may not automatically cover app.example.com.
A certificate chain issue means the certificate was found, but the trust path could not be fully validated. This can happen when intermediate certificates are missing or misconfigured.
No. A valid SSL certificate confirms HTTPS trust for the hostname, but it does not guarantee that every page asset loads securely or that all security headers are configured correctly.
Yes. The public tool can support CSV and PDF exports. You can also copy the SSL summary, certificate details or raw data where available.
The public version supports one domain or URL per check. Bulk checks, scheduled monitoring and project history are better suited to dashboard workflows.
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.