Is SEODoc really free?

Yes. SEODoc is free to use. No sign-up, no credit card, and no limits on audits.

How many pages does it crawl?

SEODoc finds and checks up to 100 pages per audit using your sitemap and internal links.

What does each score measure?

Nine areas: titles and tags, speed, security, schemas, content, mobile, links, social tags, and technical SEO. Each gets a score from 0 to 100.

How is the total score found?

Each area has a weight. Titles and technical SEO count the most at 22% each. Speed is 15%, security 12%, and links 10%.

Blog/April 10, 2026•4 min read

Google March Core Update Left 4 Losers For Every Winner In Germany via @sejournal, @MattGSouthern

Google's core updates are a series of algorithmic changes designed to improve search engine results pages (SERPs). While these updates aim to enhance the user experience, they often have a significant impact on websites, causing some to rise in visibility while others fall. In this article, we'll explore the effects of core updates on websites, particularly focusing on the uneven visibility shifts observed in Germany after the March core update.

The Anatomy of a Core Update

Core updates are significant changes to Google's algorithm that aim to improve the relevance and quality of search results. These updates can affect various aspects of a website, including its ranking, traffic, and overall visibility. While the exact mechanisms behind core updates are not publicly disclosed, they often involve changes to natural language processing (NLP), machine learning, and other advanced technologies.

The March Core Update in Germany

A recent analysis by SISTRIX found that the March core update had a significant impact on German search results, with some site types hit harder than others. According to the study, for every winner, there were approximately 4 losers in Germany. This uneven visibility shift raises questions about the factors that contribute to a website's success or failure in the face of a core update.

SEODoc audit tools surface these issues automatically, providing insights into website performance and suggesting areas for improvement. By leveraging these tools, website owners can better understand the impact of core updates on their site and take proactive steps to mitigate any negative effects.

Factors Contributing to Visibility Shifts

So, what drives the uneven visibility shifts observed in the aftermath of a core update? Several factors are likely at play, including:

Content Quality and Relevance: Websites with high-quality, relevant content are more likely to benefit from a core update. Conversely, sites with low-quality or outdated content may see their visibility decline.
Technical SEO: Websites with solid technical foundations, such as proper mobile responsiveness and fast page loading speeds, are more likely to perform well in the face of a core update.
Link Building and Authority: Websites with a strong backlink profile and high authority may see their visibility improve after a core update.
Keyword Strategy and Optimization: Websites with a well-planned keyword strategy and optimized content are more likely to benefit from a core update.

Preparing for the Next Core Update

While it's impossible to predict the exact impact of the next core update, there are steps you can take to prepare your website and minimize any potential negative effects:

Conduct a Comprehensive SEO Audit: Use SEODoc audit tools to identify areas for improvement and address any technical or content-related issues.
Focus on High-Quality Content: Create and publish high-quality, relevant content that resonates with your target audience.
Optimize Your Website's Technical SEO: Ensure your website has a solid technical foundation, including proper mobile responsiveness, fast page loading speeds, and secure protocols.
Build High-Quality Backlinks: Focus on building high-quality backlinks from authoritative sources to increase your website's authority and visibility.
Monitor and Adapt to Changes: Continuously monitor your website's performance and adapt to any changes in the search landscape.

Conclusion

Google's core updates can have a significant impact on websites, causing some to rise in visibility while others fall. By understanding the factors that contribute to uneven visibility shifts and taking proactive steps to prepare your website, you can minimize any potential negative effects and stay ahead of the competition. Remember to leverage SEODoc audit tools to surface issues automatically and make data-driven decisions to improve your website's performance.

Stay informed about the latest developments in the world of SEO and core updates. Bookmark this article and revisit it regularly to stay up-to-date on the latest insights and best practices.