SSL Certificate Checker

Check SSL certificate details, expiry date, issuer, and certificate chain for any website instantly. Free online SSL test tool.

Certificate Issuer

Subject / Domain

Valid From

Expires On

⏱️ Days Until Expiry

Protocol

Certificate Chain

    Key Type & Size

    Serial Number

    What Is an SSL Certificate Checker?

    An SSL certificate checker is a tool that inspects the SSL/TLS certificate installed on a website. It reveals important details such as the certificate issuer, validity period, domain coverage, encryption protocol, and the full certificate chain. This helps webmasters and security professionals verify that a site is properly secured.

    TooliFyra's free SSL checker provides a quick and easy way to test any website's SSL certificate without installing software or running command-line tools.

    How to Use the SSL Certificate Checker

    1. Enter the domain name (without https://) in the input field.
    2. Click the Check SSL button.
    3. View the certificate details including issuer, validity dates, protocol, and chain info.
    4. Check the days until expiry to know when renewal is needed.

    Key Features

    Certificate DetailsView issuer, subject, serial number, key type, and full certificate chain for any domain.
    Expiry TrackingSee exactly how many days remain before the certificate expires, with color-coded status indicators.
    Protocol InfoCheck which TLS protocol version the server supports (TLS 1.2, TLS 1.3, etc.).
    Instant ResultsGet SSL certificate information in seconds without any software installation.
    Works for Any DomainCheck any public website's SSL certificate — no registration or API keys required.
    100% FreeUnlimited SSL checks with no usage limits, ads, or hidden charges.

    Benefits of Using TooliFyra SSL Checker

    An expired or misconfigured SSL certificate can cause browser warnings, lose visitor trust, and hurt your SEO rankings. TooliFyra's SSL certificate checker helps you monitor your certificates and catch expiration issues before they impact your users.

    Unlike command-line tools like openssl s_client, our web-based SSL checker provides a clean, visual interface that's easy to understand for both developers and non-technical users.

    Use Cases and Applications

    Webmasters: Regularly check SSL certificates to ensure they haven't expired and are properly configured.

    Security Auditors: Verify certificate chains and issuer information during security assessments.

    DevOps Engineers: Quickly test SSL configurations after deploying new certificates or migration.

    Business Owners: Ensure your website shows the padlock icon and HTTPS without browser warnings.

    SEO Professionals: Verify SSL status since HTTPS is a ranking factor for Google.

    Why TooliFyra?

    TooliFyra's free SSL certificate checker gives you all the information you need in a clean, easy-to-read format. We don't require signups, API keys, or software installations. Simply enter a domain and get instant SSL details. Our tool is built for speed and reliability, helping you keep your websites secure.

    Frequently Asked Questions

    An SSL (Secure Sockets Layer) certificate is a digital certificate that encrypts the connection between a web server and a visitor's browser. It enables HTTPS, which protects data in transit and verifies the website's identity.

    You should check your SSL certificate at least once a month, or set up automated monitoring. Most certificates expire after 90 days to 1 year, and an expired certificate triggers browser warnings.

    This shows how many days remain before the SSL certificate expires. When it reaches zero, browsers will show security warnings to your visitors.

    You can only check publicly accessible domains. Internal or localhost certificates require command-line tools like openssl on your local machine.