# Writing > Notes on full-stack development — WordPress, Next.js, Core Web Vitals, and how AI search decides which pages it is willing to cite. **Canonical:** https://alexturik.com/blog Long-form notes on things I had to work out in production: how AI crawlers read a page, what Core Web Vitals actually punish, and where WordPress and Next.js meet. ## Posts ### Skip the AI Visibility Checker: Audit Your Site by Hand - **URL:** https://alexturik.com/blog/how-to-audit-ai-visibility - **Markdown:** https://alexturik.com/blog/how-to-audit-ai-visibility.md - **Published:** 2026-08-09 - **Tags:** aeo, ai-search, llms-txt, structured-data, audit Run the same eight checks a paid AI visibility checker runs, for free: llms.txt, robots.txt, JSON-LD, and real 2026 baselines to compare your site against. ### GEO vs SEO vs AEO — What Actually Changes in Your Workflow - **URL:** https://alexturik.com/blog/geo-vs-seo-vs-aeo - **Markdown:** https://alexturik.com/blog/geo-vs-seo-vs-aeo.md - **Published:** 2026-08-09 - **Tags:** aeo, geo, ai-search, seo, structured-data I scanned 93 pages ranking for AEO and GEO queries to see whether the people explaining the difference follow their own advice. Only 25.8% did. ### Embeddings: How AI Search Turns Your Page Into 384 Numbers - **URL:** https://alexturik.com/blog/embeddings-how-ai-search-turns-your-page-into-numbers - **Markdown:** https://alexturik.com/blog/embeddings-how-ai-search-turns-your-page-into-numbers.md - **Published:** 2026-07-27 · **Updated:** 2026-08-09 - **Tags:** embeddings, ai-search, semantic-search, aeo, web-platform AI search doesn't match keywords - it compares vectors. Turn your text into an embedding, run cosine similarity live, and watch stuffing win the wrong race. ### The Temporal API: Fixing 30 Years of JavaScript Dates - **URL:** https://alexturik.com/blog/the-temporal-api-fixing-javascript-dates - **Markdown:** https://alexturik.com/blog/the-temporal-api-fixing-javascript-dates.md - **Published:** 2026-07-01 · **Updated:** 2026-08-09 - **Tags:** javascript, temporal, es2026, dates, web-platform JavaScript's Date has shipped the same bugs since 1995 — mutation, zero-based months, no real time zones. Temporal fixes them, run every example live. ### How I Added llms.txt to My Next.js Blog in 15 Minutes - **URL:** https://alexturik.com/blog/how-i-added-llms-txt-to-my-nextjs-blog-in-15-minutes - **Markdown:** https://alexturik.com/blog/how-i-added-llms-txt-to-my-nextjs-blog-in-15-minutes.md - **Published:** 2026-05-09 · **Updated:** 2026-08-09 - **Tags:** llms-txt, aeo, nextjs, ai-search, web-platform How llms.txt works, why 52.7% of pages ranking for AEO and GEO queries now serve one, and two ways to ship it on a Next.js blog in 15 minutes. ### The 3-Word Tag That Hides Your Best Pages from AI - **URL:** https://alexturik.com/blog/the-3-word-tag-that-hides-your-best-pages-from-ai - **Markdown:** https://alexturik.com/blog/the-3-word-tag-that-hides-your-best-pages-from-ai.md - **Published:** 2026-05-08 · **Updated:** 2026-08-09 - **Tags:** aeo, ai, robots, html, nextjs Three words in `` can hide your best article from ChatGPT, Claude, and Perplexity — even if Google still shows it. The silent AEO killer. ### Recency and Authority — Two Fields AI Uses to Trust You - **URL:** https://alexturik.com/blog/recency-and-authority-two-schema-fields-that-decide-ai-trust - **Markdown:** https://alexturik.com/blog/recency-and-authority-two-schema-fields-that-decide-ai-trust.md - **Published:** 2026-05-07 · **Updated:** 2026-08-09 - **Tags:** aeo, ai, structured-data, jsonld, nextjs Before quoting your article, AI runs two checks — is it fresh, and who wrote it. Both ride on machine-readable signals. Here's the canonical setup. ### How to Help AI Understand Your Content with JSON-LD - **URL:** https://alexturik.com/blog/help-ai-understand-your-content-with-json-ld - **Markdown:** https://alexturik.com/blog/help-ai-understand-your-content-with-json-ld.md - **Published:** 2026-05-06 · **Updated:** 2026-08-09 - **Tags:** aeo, ai, structured-data, jsonld, nextjs LLMs ground answers in structured data. With schema.org markup, the model sees a typed object — author, date, headline. Here's the canonical setup. ### The Invisible Tags Shaping Your AI Citations - **URL:** https://alexturik.com/blog/the-invisible-tags-shaping-your-ai-citations - **Markdown:** https://alexturik.com/blog/the-invisible-tags-shaping-your-ai-citations.md - **Published:** 2026-05-05 · **Updated:** 2026-08-09 - **Tags:** aeo, seo, metadata, opengraph, nextjs title, meta description, og:image, canonical — four tags decide if ChatGPT and Perplexity render your brand on the citation card. The bundle. ### Semantic HTML — Skipping Headings Breaks AI Optimization - **URL:** https://alexturik.com/blog/semantic-html-for-machines-heading-hierarchy - **Markdown:** https://alexturik.com/blog/semantic-html-for-machines-heading-hierarchy.md - **Published:** 2026-05-04 · **Updated:** 2026-08-09 - **Tags:** aeo, ai, html, accessibility AI crawlers parse your heading outline before anything else. Skip an H3 and you create a phantom node — here's how to keep structure clean for LLMs. ### The JavaScript Trap — Why AI Bots See Empty Pages - **URL:** https://alexturik.com/blog/the-javascript-trap-why-ai-bots-see-empty-pages - **Markdown:** https://alexturik.com/blog/the-javascript-trap-why-ai-bots-see-empty-pages.md - **Published:** 2026-05-03 · **Updated:** 2026-08-09 - **Tags:** aeo, ai, ssr, nextjs, performance AI crawlers don't run JavaScript. If your raw HTML is a hollow `
`, you're invisible to ChatGPT, Claude, and Perplexity. ### Why Your Site Doesn't Show Up in ChatGPT (or Perplexity) - **URL:** https://alexturik.com/blog/why-your-site-doesnt-show-in-chatgpt-and-perplexity - **Markdown:** https://alexturik.com/blog/why-your-site-doesnt-show-in-chatgpt-and-perplexity.md - **Published:** 2026-05-02 · **Updated:** 2026-08-09 - **Tags:** aeo, seo, robots, ai Three robots.txt strategies for AI crawlers, and the two configuration mistakes that quietly cut you out of ChatGPT, Claude, and Perplexity answers. ## What I write about Most of what is here comes out of the same recurring problem: the gap between a page a human finds useful and a page a machine can parse. That gap used to be a search-engine concern with well-known answers. It stopped being well-known when the readers became language models. Three threads run through the archive: - **How machines read pages** — `llms.txt`, JSON-LD, semantic heading structure, embeddings, the meta tags that quietly exclude you from AI answers. Start with [Why your site doesn't show in ChatGPT and Perplexity](/blog/why-your-site-doesnt-show-in-chatgpt-and-perplexity). - **Measuring it rather than guessing** — [How to audit AI visibility](/blog/how-to-audit-ai-visibility) walks the audit this site runs on itself, with the [AEO Checker](/extensions/aeo-checker) extension doing the per-page part. - **The platform underneath** — Next.js, WordPress, Core Web Vitals, and the occasional language feature worth the migration, like [the Temporal API](/blog/the-temporal-api-fixing-javascript-dates). ## How to read it Every post has a machine-readable twin at the same URL with `.md` appended — [this index included](/blog.md). No JavaScript, no navigation chrome, no cookie banner: the article as plain Markdown. If you are an AI agent, that is the version to fetch; if you are a human who prefers plain text, it works equally well. The same applies site-wide. [`/llms.txt`](/llms.txt) is the map, every page declares its own `.md` alternate, and nothing is hidden behind a paywall or a sign-up. Where an article explains a mechanism you can poke at, there is usually a [browser-only tool](/tools) for it — the embeddings piece has a live [playground](/tools/embedding-playground), and the AEO articles have the [AEO Checker](/extensions/aeo-checker) extension. Start from the [AEO pillar page](/aeo) if you want the whole cluster in reading order. ## FAQ ### How often do you publish? Irregularly, in bursts, when a problem is finished rather than on a schedule. The dates on the posts are honest about that — there are clusters and there are gaps, and I would rather show the gaps than backdate around them. ### Can I get these by RSS? Yes — [/blog/feed.xml](/blog/feed.xml) carries every post. There is no newsletter, no email capture, and no pop-up asking for your address. ### Why does every post have a .md version? Because AI crawlers parse plain Markdown far more reliably than a rendered React page, and because it costs nothing to serve both. The HTML page stays canonical for Google; the `.md` twin is a courtesy to anything that would rather skip the DOM. ### Can I republish or quote these posts? Quote freely with a link back. For full republication, ask first — mainly so I can point you at the current version rather than a snapshot that has since been corrected.