Articles & Guides
Useful resources for web developers and system administrators
DNS
Fix DNS_PROBE_FINISHED_NO_INTERNET: Causes and Solutions
DNS_PROBE_FINISHED_NO_INTERNET means Chrome cannot reach a DNS resolver. Causes and step-by-step fixes: flush DNS, reset Winsock, change DNS servers.
SSL/TLS
Fix ERR_CERT_AUTHORITY_INVALID: Causes and Solutions
Why Chrome shows NET::ERR_CERT_AUTHORITY_INVALID: self-signed certificates, incomplete chains, untrusted CAs. Step-by-step fixes for site owners and visitors.
AI
How to Make Content Extractable for AI
A practical guide to content extractability for AI: the 40–60 word answer-block rule, query-shaped headings, tables, Schema markup and a checklist.
AI
GEO vs SEO: How AI Optimization Differs
GEO vs SEO explained: what they share (E-E-A-T, technical health), how they differ by goal, metrics, format and crawlers, whether to choose, plus a 2026 plan.
AI
Bing Copilot Optimization: How to Get Cited by AI
How to get cited by Bing Copilot: the link to Bing ranking, the role of Bingbot and Bing Webmaster Tools, Schema, IndexNow for fast indexing, and Google differences.
AI
Perplexity SEO: How to Get Cited in Answers
How to optimize for Perplexity: how it picks sources, allowing PerplexityBot in robots.txt, citation factors, GEO vs classic SEO, and checking your mentions.
AI
How to Appear in AI Answers: ChatGPT, Perplexity, Yandex
How to appear in AI answers from ChatGPT, Perplexity, Yandex and AI Overviews: extractable passages, sourced facts, Schema, AI crawler access, checklist.
AI
How to Promote a Website in AI Neural Networks (GEO)
Promote your website in AI answers (ChatGPT, Perplexity, Google AI Overviews, Gemini): the three GEO pillars, cited content formats, llms.txt, and a checklist.
AI
Google AI Overviews: How to Rank and Turn It Off
How to rank in Google AI Overviews: query fan-out, E-E-A-T, extractable passages, Schema. Impact on CTR and traffic, plus how to turn AI Overviews off.
AI
Yandex Neuro: How to Appear in Its AI Answers
How Yandex Neuro works, which signals its neuro-search uses to pick sources, and what raises your citation odds. Factors, checklist and a free test.