Miraheze provides imports for all wikis. To request an import please create a Phabricator task with a title of 'Import for [your wikis name]' replacing the name with a link to your wiki and attaching or linking an XML dump. Please note that if the dump is bigger than 10 MB, you need to use a cloud provider (like e.g. Google Drive or Dropbox). If it is a private wiki you can send this by email to sremiraheze.org. You can read Moving a wiki to Miraheze if you need help creating a dump file.