A premier Urdu digital library. While Rekhta focuses on poetry and prose, they do offer classical Islamic texts. Search for Mishkat ul Asar under “Non-Fiction > Religion.”
Below is a guide to the top Urdu resources for Mishkat ul Asar, including where to find PDF versions and physical copies. Top Urdu Sharah of Mishkat ul Asar Miftah ul Asrar (مفتاح الاسرار) : Authored by Maslehuddin Qasmi mishkat ul asar urdu sharah pdf top
A contemporary scholar from Jamia Uloom-ul-Islamia (Banuri Town, Karachi). Why it is Top Tier: A premier Urdu digital library