Why SEO Crawlers Get Blamed After Every Migration
The predictable blame pattern: why SEO crawlers get accused after every migration A classic scenario: the migration goes live at 14:00. At 18:00 you start your validation crawl. At 20:00 the site slows down, logs show your crawler, and suddenly you’re the suspected cause. This never happens on stable infrastructure. It happens after big technical […]
The Problem With AI Prompt Data: Why Marketers Should Be Skeptical
Before you base your strategy on “real user prompts,”
understand what you’re actually looking at
Schema Markup and AI in 2025: What ChatGPT, Claude, Perplexity & Gemini Really See
8 Tests with 5 AI Systems show:
JSON-LD is ignored — but Google indexes JavaScript correctly!
AI Crawlers & JavaScript Rendering
Comprehensive JavaScript Rendering Analysis & Bot Behavior Patterns
The Bot Dilemma – When Bot Protection Becomes Customer Rejection
In 2025, bots account for the majority of global web traffic. The real challenge lies in stopping abuse without disrupting authentic user experiences.
Get more detailed Google Search Console data using the new BigQuery export
Google introduced a game-changing feature for Google Search Console in 2023: the ability to export data directly to BigQuery. When we activated the export feature, we uncovered a wealth of additional URL and keyword data that was previously unavailable in standard Search Console reports. With this BigQuery export feature, you can dig deeper into your […]
The complete website migration SEO checklist for 2023
Based on our experience from a big number of website relaunches, we have compiled this website relaunch SEO checklist with lots of details and a free PDF version.
JavaScript Crawling Study: Rendered vs. Non-Rendered HTML
We crawled over 200 domains, including all URLs linked from their homepages and the homepages themselves, and examined the differences between the rendered and non-rendered HTML on every page. You can find a summary of the results and some detailed examples in this post. At the end of the article, you can also access the […]
Service Worker – What SEOs Need to Know
What are “service workers” and how do they work? A service worker is a Javascript process that runs in the browser background. The service worker runs in the background and acts as a kind of proxy between the website and the Internet and can intercept and manipulate network requests. Service workers have (almost) “only” influence […]
JavaScript-Crawling-Studie: Gerendertes HTML vs. Original-Quelltext
Wir haben über 200 Domains inklusive aller auf der Startseite verlinkten URLs gecrawlt und die Unterschiede zwischen dem gerenderten HTML und dem Original-Quelltext untersucht. Die Ergebnisse und einige Beispiele findet ihr in diesem Beitrag. Unterschiede zwischen den beiden HTML-Versionen können, gerade bei größeren Webseiten, eine Rolle bei der Indexierung spielen und sollten daher bei der […]
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