Queldrex Blog
Guides, strategies, and deep dives on AI visibility and search optimization.
How to Check DNS Records Online (And What Each One Means)
DNS records control your email, website, and security. Here is what each record type does, why you would need to check them, and how to read the results.
SPF, DKIM, and DMARC Explained - Why Your Emails Go to Spam
Three DNS records stand between your emails and the spam folder. Here is what SPF, DKIM, and DMARC each do, how they work together, and how to check if yours are configured correctly.
Free NDA Template - What to Include and What to Watch Out For
A non-disclosure agreement does not need to be complicated or expensive. Here is what a solid NDA covers, the difference between mutual and one-way agreements, and what to watch out for before you sign.
How to Check npm Packages for Security Vulnerabilities
npm audit misses things. Here is how CVE databases actually work, what CVSS scores mean, and the fastest way to find and fix vulnerable dependencies before they become a problem.
How to Check Your SSL Certificate Expiry Date (And Set Up Alerts)
An expired SSL certificate takes your site offline with no warning. Here is how to check your expiry date, what the results mean, and how to make sure it never expires again.
What Is AI Visibility? The Metric Every Business Needs in 2026
AI search engines like ChatGPT and Perplexity are replacing Google for millions of queries. AI Visibility is the measure of how well your business shows up in those results.
Is Your Business on ChatGPT? How to Find Out (And Fix It If Not)
Millions of people ask ChatGPT to recommend local businesses, products, and services every day. Here's how to check if your business shows up - and what to do if it doesn't.
AI SEO vs Traditional SEO: What Changed and What Still Matters
Google SEO and AI search optimization share some DNA - but the signals that matter are very different. Here's what you need to know to rank in both.
How to Improve Your Business's AI Visibility: A Step-by-Step Guide
A practical, no-fluff guide to making your business more visible to ChatGPT, Perplexity, and other AI search engines. Covers schema markup, citations, content strategy, and more.
How ChatGPT Decides Which Businesses to Recommend
ChatGPT doesn't just search Google when recommending businesses. It uses training data, real-time search, and structured signals. Here's exactly how it works.