A 2023 report by the International Organization for Standardization (ISO) indicates that German-language websites conforming to DIN standards are indexed by Google.de 40% faster (source: iso.org ). Google Search Center data shows that structured sitemaps can double the indexing speed of multilingual websites (source: developers.google.com ).
I. Special Requirements for German Website Sitemap
1. The impact of DIN standards on website structure
- Core specifications :
- The complete Impressum (copyright notice) must be included.
- Data format must conform to DIN SPEC 3105
- The German Association for Standardization (DIN) recommends that all commercial pages must display the USt-ID (Value Added Tax Number) (Source: din.de ).
Case Study : A machinery company's German website had a page indexing rate of only 35% due to the lack of an Impressum page.
2. Engineered processing of multilingual markup
- hreflang tags :
- Exact match de-DE (German)
- Avoid confusion with de-AT (Austrian German)
- XML Sitemap Hierarchy :
- The main site and the German-language site were generated independently.
- Cross-linking between language versions
II. Sitemap Generation and Optimization
1. Technical Architecture Requirements
- Required fields :
- Last modified time (lastmod)
- Update frequency (changefreq)
- The Society for Search Engine Marketing (SEMI) standard states that sitemap files must be less than 50MB (Source: semi-global.org ).
2. Dynamic content processing
- URL standardization for multilingual product pages
- Session ID Filtering
III. Submission and Monitoring Strategy
1. Search engine proactive push
- API submission to Google Search Console
- Batch submission using Bing Webmaster Tools
2. Monitoring of inclusion performance
- Filter German queries using Search Console
- Regularly review pages that are not indexed.
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