Deep dives into tools,
techniques & the web.
Practical guides covering developer tools, health metrics, SEO, converters and more — written to be actually useful.
✦ AI-powered — understands natural language
Robots.txt Was Informal for 28 Years — What RFC 9309 Actually Standardized and What It Still Leaves Open
Height Conversion and What Your Height Actually Reflects About Health
Height is more than a number — it reflects childhood nutrition, genetics, and health system quality across generations. Here's the full conversion reference, what drives global height variation, and why measured height matters for health calculations.
Internal Linking Strategy: How to Distribute PageRank Effectively Across Your Site
Most internal linking patterns developed accidentally, not by design. Here's how PageRank flows through internal links, the hub-and-spoke model, how to find underlinked important pages, and anchor text strategy for distributing authority effectively.
International SEO Beyond Hreflang: URL Structure, Content Localisation, and Local Links
Hreflang solves one problem in international SEO — the rest depends on URL structure choice, genuine content localisation vs. translation, and local link building. Here's the complete international SEO framework that hreflang fits into.
Site Migration SEO: The Redirect Mistakes That Cost Rankings and How to Avoid Them
Site migrations lose SEO value in predictable ways: homepage redirects, redirect chains, and missing redirects for high-value pages. Here's the complete pre-migration checklist, how to preserve link equity through domain changes, and post-migration monitoring.
Domain Due Diligence: Using WHOIS for SEO Research, Vendor Vetting, and Expiry Monitoring
WHOIS records reveal domain age, ownership history, expiry dates, and registration patterns that matter for SEO domain research, vendor due diligence, and operational monitoring — not just availability checking.
Shannon Entropy and Character Frequency: The Information Theory Behind Text Analysis
Character frequency analysis connects directly to Shannon entropy, data compression, and information theory. Here's what the distribution of characters in text reveals about compressibility, password strength, Zipf's Law, and stylometric authorship analysis.
Beyond Keyword Density: TF-IDF and How Search Engines Actually Measure Topic Relevance
Raw keyword density is an outdated metric. TF-IDF is more useful. Neither is as important as comprehensive topical coverage with natural language. Here's how search engines actually measure relevance and what keyword density tools are actually good for.
Readability Scores Explained: What Flesch-Kincaid Measures — and What It Misses
Readability scores measure sentence length and syllable count — not vocabulary familiarity, coherence, or domain knowledge. Here's how Flesch-Kincaid, Gunning Fog, and SMOG actually work, what they miss, and when they're genuinely useful as diagnostic tools.
Writing Alt Text That Works for Both SEO and Accessibility
Alt text that works for both screen readers and SEO follows specific principles: contextual relevance, appropriate keyword inclusion without stuffing, and different approaches for different image types. Here's the craft behind writing alt text that does both jobs well.
Which Schema Types Actually Produce Rich Results in Google — and Which Don't
Valid schema doesn't guarantee rich results. Here's which schema types actually produce rich results in 2024 (Product, Event, JobPosting, BreadcrumbList), the 2023 FAQ and HowTo changes, and common reasons schema fails despite passing validation.
Organic CTR Optimisation: What Actually Makes People Click Your Search Result
Two pages at the same ranking position can have CTR gaps of 4x or more depending on snippet quality. Here's what actually drives organic CTR, how to use Search Console data to find underperforming snippets, and how to write titles that get clicked.
The Mid-Market Rate and the Spread: Why the Exchange Rate You See Isn't the One You Get
The rate Google shows for USD/EUR is not the rate you'll get from your bank. Here's how the mid-market rate works, what the bid-ask spread costs you, and why the gap between the two can be 3–5% at a bank or 10%+ at an airport kiosk.
