Should I create both a gzip and a regular XML sitemap?

Question: Should I create both a gzip (gz) and XML sitemap?

Answer: The gzip option in Sitemap Creator is a compressed version of the XML sitemap. It does not contain any additional information. You only need to submit one or the other to Google (not both). Generally, we only recommend using the gzip option if your XML sitemap file is large (over 1MB).