Technical SEO #technical-seo
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.
53 posts
Why Pages Get Deindexed (and How to Diagnose It with a Crawl)
Hundreds of pages dropped from Google overnight and you have no idea why. Here is what 'deindexed' actually means, the eight causes that explain almost every case, and a 15 minute crawl-based triage to find yours.
The Year in Title Myth and What Core Updates Actually Move
Adding the current year to your title tag is not a ranking signal. This guide walks through what core updates actually evaluate, why some old pages climb back, what Information Gain is, and how to read post-update panic without making it worse.
llms.txt: Do AI Engines Actually Read It?
llms.txt is meant to feed your content to AI models. New data on 137K sites shows 97% of these files are never even requested. Here is what actually works instead.
Website Redesign SEO Checklist: How to Replatform Without Losing Traffic
Pre-redesign audit, redirect map, URL structure decisions, on-page signal transfer, staging QA, launch day, and the first 30 days. A complete checklist.
Best SEO Crawlers Compared: An Honest 2026 Guide
Screaming Frog, Sitebulb, Ahrefs, Semrush, Lumar, ContentKing and Seodisias side by side. Pricing, JavaScript rendering, free tiers, and which crawler fits which job.
JavaScript SEO and Rendering: How Search Engines See Your Modern App
How Google and AI crawlers actually render JavaScript, the two wave indexing model, when to choose CSR, SSR, SSG, or ISR, and the patterns that quietly break indexing.
Hreflang Implementation Guide: Three Methods, x-default, and Five Common Mistakes
How to implement hreflang correctly for multilingual sites. The three placement options, the x-default tag, the relationship with canonical, and the five mistakes that quietly break it.
Core Web Vitals in 2026: LCP, INP, CLS, and What Actually Moves Rankings
The official 2026 Core Web Vitals thresholds for LCP, INP, and CLS, what each metric measures, lab versus field data, and the playbook that fixes each.
Internal Linking as a Crawl Budget Tool: Patterns, Anchors, Audits
Internal links shape what crawlers see, how often, and in what order. Learn the patterns that prevent orphans, control link depth, and survive site growth.
XML Sitemaps at Scale: Build, Split, and Validate Without Quiet Errors
An XML sitemap tells crawlers which URLs you want indexed. Learn the spec, the 50,000 URL split rule, what belongs in or out, and how to validate yours.
The Complete Guide to robots.txt: Rules, Examples, and AI Crawlers
robots.txt controls what search engines and AI crawlers can access. Learn the syntax, common patterns, and how to handle GPTBot, ClaudeBot, and PerplexityBot.
Canonical Tags Explained: Stop Duplicate Content Hurting Your Rankings
Canonical tags tell search engines which URL to index when duplicates exist. Learn how to use rel canonical correctly and avoid common mistakes.
What Are Redirect Chains and How to Fix Them
Redirect chains slow down crawling, waste link equity, and confuse search engines. Learn what they are, why they happen, and how to find and fix them.
What Are SEO Crawlers? The Complete 2026 Guide
What SEO crawlers are, how they work, what they check, and how to use crawl data to improve your site. The complete 2026 guide to crawling for technical and AI SEO.
Schema Markup for SEO and AI Search: A Practical Guide
Learn what schema markup is, how to add structured data to your pages, and why it matters for both Google rankings and AI search citations.
Crawl Budget for Ecommerce: Stop Wasting Googlebot on Filters
Faceted navigation, product variants, and infinite filters drain crawl budget on ecommerce sites. Here is how to reclaim it for pages that sell.