Before Unicode became ubiquitous, InPage was (and still is) the gold standard for Nastaliq script. Developed in 1994, InPage allows users to type in a phonetic layout (like "salam" for "سلام") and produces the flowing, calligraphic Nastaliq style—the beloved script for Urdu poetry and prose.
What is Unicode? How to Use it & Benefits of Using It - Lenovo unicode to inpage converter
Several reliable tools exist to handle this conversion effortlessly: Before Unicode became ubiquitous, InPage was (and still