Articles & Guides

How to check an SSL certificate: via browser, OpenSSL, and online tools. Certificate types, trust chain explained, and automated expiration monitoring.

A comparison of 10 website monitoring services for 2026: an at-a-glance table (interval, Telegram, multi-region, price), a breakdown of each, and how to choose for your task.

Check a website for malware: infection symptoms, external scanners, DevTools, hunting backdoors on the server and in the database, cloaking tests and a cleanup plan.

Complete guide to SPF, DKIM, and DMARC email authentication. Learn how to protect your domain from spoofing, improve deliverability, and pass Gmail and Yahoo requirements.

Compare graceful degradation and progressive enhancement approaches to web development. Learn practical strategies, code examples, and when to use each approach for resilient web applications.

Understand how Certificate Transparency logs work, why they matter for web security, and how to monitor CT logs to detect unauthorized certificates issued for your domain.

Learn how to create and enforce web performance budgets using metrics like LCP, bundle size, and request count. Integrate budgets into CI/CD pipelines for automated enforcement.

A comprehensive guide to implementing multi-CDN architecture for improved reliability, lower latency, cost optimization, and intelligent traffic splitting across CDN providers.

Learn the differences between Real User Monitoring and synthetic monitoring, how to track Core Web Vitals, and which RUM tools to use for production performance insights.

Complete guide to HTTP Strict Transport Security (HSTS) header and preload list. Implementation steps, risks, rollback strategy, and best practices.