Hi everyone. First of all thanks a lot for your help and answers. I run another test, because we had many requests from our clients.. (with Safari) ... that the site seems to be slower. I run a test locally with a older version of nginx: 0.6.34 => with this version the gzip shows up correctly in the WebDeveloper of Safari and Chrome. For this reason i suggest, that it is a nginx topic, not a bug or view problem of the web-developer tools built in.

Perhaps you have andy idea. Thanks in advance.