Technical Explainers
39 guides in this category · showing 25–36 (page 3 of 4).
99.9% vs 99.99% Uptime Explained (With Real Downtime Math)
What's the real difference between 99.9% and 99.99% uptime? See the actual downtime math per year and month, and learn what uptime level you really need.
How to Test Website Response Time From Your Browser (Free)
Learn how to test a website's response time from your browser for free using DevTools — read the full Network timing breakdown, from DNS to first byte to load.
What Is a Good TTFB? Benchmarks & How to Test Any Site
What is a good TTFB? Learn what Time To First Byte means, the benchmarks for good vs poor, how to test any site's TTFB for free, and how to improve it.
How to Verify Who Really Owns a Website (Free Methods)
WHOIS privacy hiding the owner? Learn free methods to verify who really owns a website — from legal pages and SSL details to business and trademark records.
Wildcard vs Multi-Domain SSL Certificates: Which Do You Need?
Wildcard vs multi-domain (SAN) SSL certificates — what's the difference and which do you need? A clear guide to choosing the right certificate for your setup.
How to Check a Website for Mixed Content Errors
Your HTTPS site still shows "Not Secure"? Learn how to check a website for mixed content errors, why they happen, and how to fix them for a full padlock.
What Is HSTS & Why Do Some Sites Force HTTPS?
What is HSTS and why do some sites force HTTPS? A plain-English guide to HTTP Strict Transport Security, how it protects you, and the errors it can cause.
Why Do Sites Show Cloudflare Checks? (403/429 Errors Explained)
Why do sites show a Cloudflare "checking your browser" page or a 403/429 error? Learn what these security checks mean and how to get past them as a real visitor.
What Does "Not Secure" in Chrome Mean — Should You Worry?
Seeing "Not Secure" in Chrome? Learn what it really means, whether the site is dangerous, when to worry, and how site owners can fix it — in plain English.
How to Spot a Phishing Website: 10 Red Flags to Check
Learn how to spot a phishing website with 10 clear red flags — from spoofed URLs and fake login pages to urgent threats — before scammers steal your details.
What Is a TLS Handshake? Explained in Plain English
What is a TLS handshake? A plain-English guide to the split-second negotiation that secures every HTTPS connection — the steps, TLS 1.3, and what can go wrong.
HTTP vs HTTPS: The Difference & Why It Matters for Security and SEO
HTTP vs HTTPS — what's the difference and why does it matter? Learn how HTTPS protects your data, boosts SEO, and why every site should use it today.
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