What is an SSL Checker?

An SSL checker is a diagnostic tool that examines your website's SSL/TLS certificate to ensure:

Proper installation and configuration

Validity period (expiration date)

Certificate chain completeness

Supported encryption protocols

Trusted certificate authority (CA) status

SSL (Secure Sockets Layer) certificates create encrypted connections between web servers and browsers, indicated by 🔒 and "HTTPS" in addresses.

Why SSL Certificates Matter

✔ Encrypts sensitive data (login credentials, payments)
✔ Boosts SEO rankings (Google ranking factor)
✔ Builds visitor trust with padlock indicators
✔ Prevents "Not Secure" warnings in browsers

Example Check:

https://example.com → Valid until: 2025-12-31 | SHA-256 | TLS 1.3 supported

Why Use Our Free SSL Checker?

Our tool provides comprehensive SSL analysis with clear, actionable insights:

✅ Instant Results: No waiting or installations
✅ Detailed Reports: All certificate attributes
✅ Expiration Alerts: Prevent unexpected downtimes
✅ Multi-Domain Support: Check primary + subdomains
✅ No Technical Skills Needed: Plain-English explanations

How to Use the SSL Checker (3 Simple Steps)

Step 1: Enter Website URL

Type any domain (e.g., yourstore.com) or full URL

Step 2: Click "Check SSL"

Our tool probes the server and analyzes: Certificate validity Chain configuration Protocol support

Step 3: Review Security Status

Key metrics displayed:

Expiration Date (Days remaining)

Issuer (Let's Encrypt, DigiCert, etc.)

Encryption Strength (RSA 2048-bit, ECC, etc.)

Vulnerability Warnings (Heartbleed, POODLE)

Pro Tip: Bookmark results and set calendar reminders for renewal dates!

Key Features of Our SSL Checker

1. Complete Certificate Analysis

Validates all certificate fields:

Common Name (CN)

SANs (Subject Alternative Names)

Key Usage extensions

2. Protocol & Cipher Suite Testing

Checks support for:

TLS 1.2/1.3 (blocks outdated SSL 3.0) Secure cipher suites (AES256-GCM, CHACHA20)

3. Mixed Content Detection

Flags insecure HTTP elements on HTTPS pages:

Images

Scripts

Iframes

4. Historical Tracking (Premium)

Monitor certificate changes over time

Receive expiration alerts via email

5. API Integration

Programmatic checks for DevOps teams

100 free queries/month

Who Needs an SSL Checker?

1. Website Owners

Avoid security warnings scaring visitors

Ensure payment pages remain compliant

2. SEO Professionals

Verify HTTPS implementation for ranking signals

Fix mixed content issues hurting SEO

3. E-commerce Stores

Maintain PCI DSS compliance

Protect customer transactions

4. Web Developers

Debug certificate installation errors

Test staging environments

5. IT Security Teams

Audit organizational web assets

Detect self-signed/expired certs