Wikipedia
Fingilish, Pinglish, Penglish or Fargelisi (a portmanteau word formed from Persian + English, or Farsi + English) is the way Persian words are written using the Latin alphabet (as opposed to the Persian alphabet), or generally the casual romanization of Persian words popularized after computers, emailing and online chat became ubiquitous. This type of writing is commonly used in online chat, emails and SMS. It developed and spread due to a former lack of software supporting the Persian alphabet, and/or due to a lack of knowledge about the software that was available. Although Persian writing is supported in recent operating systems, there are still many cases where the Persian alphabet is unavailable and there is a need for an alternative way to write Persian with the Latin alphabet.
The following table contains some examples of romanized Persian words and the ways they are used by Persian chat users.
Fingilish
Persian
English
Dorud
hello
amadan
to come
parvaz
flight
sakhtar
structure
ghamus
manifest
There is software to help transliterate from Fingilish to Persian and vice versa. For example, Google has added a page to its Google Transliteration set that can be used to transliterate from Fingilish into Persian script. There are also communities and message groups for Fingilish on some famous websites like Facebook.