Google: you can use umlauts in your URLs

On Twitter, Google’s John Mueller confirmed that you can use umlauts such as ä, ö or p in internal links. You do not have to use punycode. So it’s okay to link to http://römtömtömtöm.com instead of http://xn--rmtmtmtm-n4accc.com/ (which is basically the same URL):

You can check the URL structure of your website with the website audit tool in SEOprofiler:

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Johannes Selbach

Johannes Selbach is the CEO of SEOprofiler. He blogs about search engine optimization and website marketing topics at "http://blog.seoprofiler.com".