// knowledge base

Web Performance & Security Blog

In-depth technical guides on DNS, SSL certificates, HTTP security headers, uptime monitoring, and network performance. Written for developers and website owners.

Troubleshooting8 min read

Is It Down for Everyone or Just Me? How to Know for Sure

When a website won't load, the first question everyone asks is: is this just me, or is the site actually down? Here's exactly how to find out — and what to do next.

Jan 15, 2024Read →
DNS11 min read

Complete Guide to DNS Lookup: A, MX, TXT, NS Records Explained

DNS records are the building blocks of the internet. This guide explains every record type, what it does, how to read it, and when you need to change it.

Jan 22, 2024Read →
Security10 min read

SSL Certificate Checker: How to Inspect, Validate & Fix SSL Issues

SSL certificates are the foundation of web security, but expired or misconfigured certificates can take your site offline instantly. Learn how to check, validate, and troubleshoot SSL certificates.

Feb 1, 2024Read →
Security9 min read

HTTP Security Headers: The Complete Implementation Guide

HTTP security headers are one of the most underutilized defenses in web security. This guide covers every critical header, what it does, and exactly how to implement it.

Feb 10, 2024Read →

About This Blog

SiteStatus Toolkit's blog covers practical web infrastructure topics that developers and website owners encounter daily. Our guides are written to be thorough, accurate, and immediately actionable — not watered-down overviews.

Topics include: DNS record types and propagation, SSL/TLS certificate management, HTTP security header implementation, website uptime monitoring strategies, network latency optimization, and web server configuration. Each guide links directly to the relevant free tool so you can verify concepts against real data.