Question: how to transfer files between two laptops using wifi without router?
Answer: You just need to create a mobile hotspot on one of the two laptops (To create hotspot, inbuilt option provided in Windows 10) and just connect your other laptop using this hotspot. Next, just download and install SHAREit on both laptops. Setup file size would be ~6.15 MB. Now, Open SHAREit application on both laptops.