Chwilio am gysylltiadau allanol

Gellir defnyddio cardiau gwyllt megis "*.wikipedia.org". Mae angen parth lefel-uchaf o leiaf, er enghraifft "*.org".
Protocoliau sy'n cael eu cynnal: bitcoin:, ftp://, ftps://, geo:, git://, gopher://, http://, https://, irc://, ircs://, magnet:, mailto:, mms://, news:, nntp://, redis://, sftp://, sip:, sips:, sms:, ssh://, svn://, tel:, telnet://, urn:, worldwind://, xmpp: (yn neidio i http:// os na roddir protocol o gwbl).