---
title: "Security & SEO — Lemwatch help"
description: "Security headers, SSL, and SEO checks."
canonical: "https://lemwatch.com/help/c/security-seo"
source: "https://lemwatch.com"
---

# Security & SEO

> Security headers, SSL, and SEO checks.

## Security & SEO articles

- Security Headers Explained
- SSL Certificate Monitoring
- Understanding Your Security Grade
- SEO Health Monitoring
- Broken Links Detection
- Content Freshness Tracking
- SSL & Domain Renewals
- Cookie Compliance Checks
- Domain & WHOIS Monitoring
- Malware & Threat Detection
- Certificate Transparency Monitoring
- Exposed Services & Port Scanning
- HTML Validation Checks
- How to use the free SSL certificate checker
- How to use the free security header checker
- How to use the free sitemap diff tool
- How to use the free mixed content checker
- How to use the free broken link checker
- How to use the free Core Web Vitals checker
- SPF record check
- DKIM record check
- DMARC record check
- Blacklist & reputation check
- Open port scan check
- HSTS header check
- Content-Security-Policy header check
- X-Frame-Options / frame-ancestors check
- Cookie security check
- TLS version & cipher check
- Certificate chain check
- Canonical tag check
- Robots.txt check
- Hreflang tag check
- Structured data (JSON-LD) check
- Mobile-friendly check
- How does Lemwatch monitor XML sitemaps?
- How does Lemwatch track robots.txt changes?
- How does Lemwatch validate canonical URLs?
- How does Lemwatch check hreflang tags?
- How does Lemwatch validate structured data (JSON-LD)?
- How does Lemwatch track Google indexation?


## Related

- [Help centre](https://lemwatch.com/help)
- [Lemwatch pricing](https://lemwatch.com/pricing)
- [All monitoring checks](https://lemwatch.com/features)
- [Status Pages & Widgets](https://lemwatch.com/help/c/status-pages)
- [Reports & Exports](https://lemwatch.com/help/c/reports)