Technical SEO covers everything that affects how search engines crawl, render, and index your site: server response, HTML structure, redirects, sitemaps, structured data, and Core Web Vitals. These guides give you the systems-level view that turns a crawler report into ranking gains.
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JSContact is the JSON format for contact data in RFC 9553. See how it maps to vCard, how it differs from schema.org markup, and what it means for SEO audits.

A 12-week plan for technical SEOs to learn crawling, answer engine optimization (AEO) and generative engine optimization (GEO) with free tools and weekly deliverables.

How URL structure affects AI search and crawlers: what is documented, what is plausible, what is unknown, and how to audit your URLs with a site crawl.

Learn how to read a local ranking grid, map weak neighborhoods to your site, and run a multi-location ranking audit that exposes service area SEO gaps.

Learn how to audit a client site without GSC access. Find technical SEO issues locally, explain limits clearly, and build client trust without credentials.

A practical 2026 SEO ready checklist for Google and AI search: technical SEO, structured data, JavaScript rendering, E-E-A-T, and agent-friendly content.

Bing Webmaster Tools may show a page as indexed while it stays out of search results. Learn how to diagnose filters and fix technical and quality issues.

RFC 10029 lets crawlers fetch A, AAAA, and HTTPS records in one DNS query instead of three, cutting TTFB and improving crawl budget efficiency for Googlebot.

You submitted a clean XML sitemap and Google still leaves pages out of the index. A sitemap is a hint, not a command. Here are the real reasons Google ignores it and how to diagnose each one with your own crawl.

A step-by-step guide for Screaming Frog users moving to Seodisias: what stays the same, what you gain, and how to set up your first crawl without hitting a URL cap or paying a yearly license.

AI crawlers read raw HTML, not your rendered JavaScript. Here is how to test, in a few commands, whether your content is actually visible to them.

GPTBot, ClaudeBot, PerplexityBot and friends are already in your access logs. Here is how to find them, tell real bots from impostors, and decide what, if anything, to do about it.

The new _for-sale DNS convention lets a domain declare it is for sale, machine-readably. How the record works, what it changes for the domain market, and what it does not do for your rankings.

Google's Open Knowledge Format packages knowledge for AI agents as plain Markdown. Here is how it works, how to produce one, and why it is not a ranking signal.

Agentic is everywhere, but few people say what it means for your own skill set. Here is which SEO skills gain weight, which ones are genuinely new, and a low-regret way to learn them without chasing hype.

When several of your pages chase the same query, they split your authority instead of stacking it. Here is how to find cannibalizing and thin pages with a crawl, and a clear decision framework for when to delete, redirect, noindex, consolidate, or canonical each one.