Klingon Alphabet Language Online
Klingon writing systems (From Wikipedia)
In the Star Trek movies and television shows, the Klingons use their own alien writing system to write the Klingon language. In Mark Okrand's The Klingon Dictionary this alphabet is named as pIqaD, but no information is given about it.
The orthography outlined when we talked about the sounds of Klingon is the "official" writing system, designed by Marc Okrand when he invented the language.