Search Engine Algorithms & Mechanisms
How crawlers, indexing, ranking signals, and rendering impact visibility.
Understanding how search engines work isn't about gaming rankings—it's about building sites that align with how crawlers discover, render, and evaluate content. These articles cover the technical mechanisms behind organic visibility: how Googlebot allocates crawl resources, how duplicate content confuses indexing, why canonicalisation matters, and what actually happens when JavaScript renders.
Most SEO advice treats these systems as black boxes. We prefer to explain the underlying logic, so you can make better architectural decisions rather than following prescriptive checklists that may not apply to your situation.
All articles
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Hreflang and x-default for International SEO: When You Actually Need Them
Most sites don't need hreflang. When regional targeting matters, what x-default actually signals, and how to avoid common implementation mistakes.
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Log File Analysis for Technical SEO: Diagnostics, Budget Audits and Validation
How to collect, parse, and interpret server logs to diagnose crawl behaviour, identify budget waste, and validate technical SEO implementations.
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JavaScript SEO: Rendering Strategies for Search Visibility
How search engines process JavaScript, rendering strategies for React, Vue, and Next.js, and principles of progressive enhancement for robust indexability.
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Crawl Budget Optimisation: Capacity Limits and Demand Signals
How crawl capacity and demand determine which pages search engines prioritise, and practical strategies to eliminate waste on large-scale sites.
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Duplicate Content: Detection, Canonicalisation, and Consolidation
How search engines detect and handle duplicate content, why penalties are a myth, and technical solutions for canonicalisation and consolidation.
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